Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
in proportion of
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "in proportion of" is not correct in standard written English.
The correct expression is "in proportion to." Example: "The budget will be allocated in proportion to the number of participants in the program."
⚠ May contain grammatical issues
Science
News & Media
Academia
Alternative expressions(20)
in part of
with respect to
in the attendance of
in interest of
in proportion to
to participate of
in involvement of
in participation of
scaled to
stemming from the inclusion of
in the involvement of
commensurate with
relative to
of involvement of
in enrolment of
of participating of
in engagement of
in portions of
with the contribution of
in relation to
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
59 human-written examples
And they pay the most not in proportion of their income, but in absolute terms.
News & Media
We found that although older adults reported overall fewer thoughts compared to young adults, they exhibited a reduction in proportion of SITs and an increase in proportion of SDTs.
Academia
It hemorrhaged residents, with many using their college degrees as tickets out: Michigan is 34th in proportion of college graduates.
News & Media
The increment in proportion of lactic acid provided higher particle size results.
They were similar in the species composition, although differing noticeably in proportion of individual taxa.
Science
Buckling coefficients presented can be used in proportion of stud spacing and plate thickness.
Increase in proportion of PEO and GB in the formulation reduced drug dissolution within the first 90 min.
Strength of the acid, p-nitroanilinium ion increases with the increase in proportion of urea in the solvents, the rate of increase being sharp at the begining.
Science
The developed coatings exhibit appreciable increase in hardness, wear resistance and coefficient of friction (COF) with increase in proportion of (SiO2 + C) in the precursor powder mixture.
Internet safety had no differences in proportion of concern by education status, income level or marital status.
News & Media
In addition, we assume that foreign savings are also fixed in proportion of GDP10.
Science
Expert writing Tips
Best practice
Always use "in proportion to" instead of "in proportion of". The preposition "to" is grammatically correct in this context.
Common error
Avoid using "of" after "in proportion". The correct preposition is "to". For example, say "The reward should be in proportion to the effort" not "The reward should be in proportion of the effort."
Source & Trust
83%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "in proportion of" functions as a prepositional phrase attempting to describe a relationship between two quantities, indicating that one changes in relation to the other. However, this phrase is considered grammatically incorrect, according to Ludwig AI.
Frequent in
Science
49%
News & Media
21%
Academia
15%
Less common in
Formal & Business
4%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, while the phrase "in proportion of" appears frequently in various sources, Ludwig AI identifies it as grammatically incorrect. The correct and widely accepted form is "in proportion to". This phrase is used to express a direct relationship between two quantities. For formal writing, using alternatives like "proportionally", "relative to", or "commensurate with" can also enhance clarity and precision. Always prefer "in proportion to" to ensure grammatical correctness and avoid potential misinterpretations.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
in proportion to
Corrects the grammatical error by using the proper preposition.
proportionally
Replaces the prepositional phrase with an adverb.
commensurate with
Indicates a matching or corresponding relationship in degree or amount.
relative to
Indicates a comparison or relationship to something else.
in relation to
Emphasizes the connection or association between two things.
compared to
Highlights a direct comparison in terms of quantity or degree.
in correspondence with
Suggests a direct matching or alignment between two elements.
scaled to
Implies an adjustment based on a specific ratio or measurement.
with respect to
Indicates a particular aspect or point of reference.
dependent on
Highlights the reliance of one thing on another for its value or amount.
FAQs
What is the correct way to say "in proportion of"?
The correct phrase is "in proportion to". The preposition "to" should be used instead of "of".
What does "in proportion to" mean?
It means that two things vary directly with each other; as one increases or decreases, the other does so as well. For example, "allocate resources "in proportion to" need".
Can I use "proportionally" instead of "in proportion to"?
Yes, "proportionally" is an adverb that conveys a similar meaning. For example, instead of saying "The funding was allocated "in proportion to" the population size", you can say "The funding was allocated proportionally".
What are some alternatives to "in proportion of"?
While "in proportion of" is grammatically incorrect, alternatives to the correct phrase "in proportion to" include "relative to", "commensurate with", or "in relation to" depending on the context.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
2.8/5
Expert rating
Real-world application tested