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
fourth instalment
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "fourth instalment" is correct and usable in written English.
It can be used when referring to the fourth part of a series, such as a book, film, or payment plan. Example: "The fourth instalment of the popular book series was released last week."
✓ Grammatically correct
News & Media
Alternative expressions(2)
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
60 human-written examples
Now on its fourth instalment.
News & Media
From the fourth instalment the series begins to sprawl.
News & Media
Steven Spielberg, who produced and directed the first two films, will not direct the fourth instalment.
News & Media
Alien Resurrection The fourth instalment in the Alien franchise was directed by Jean-Pierre Jeunet.
News & Media
The fourth instalment of the latter series, Empire of Silver, is out this month.
News & Media
The computer you can build in 107 seconds Our fourth instalment of the Tech 128 tomorrow.
News & Media
The fourth instalment in Michael Bay's divisive, sci-fi saga took $1.087bn£690m0m) around the world.
News & Media
The comedy slasher franchise dominated her career until the last money-spinning fourth instalment in 2011.
News & Media
But it's rarely been enthralling, with the exception of Mike Newell's fourth instalment, Harry Potter and the Goblet of Fire.
News & Media
Why we're excited True: there's no rich history of the fourth instalment in a blockbuster series being great.
News & Media
But when Last Crusade was made, there were no plans for a fourth instalment, thus no sneaky contractual obligations.
News & Media
Expert writing Tips
Best practice
When referring to parts of a series that are released periodically, such as films or books, use "fourth instalment" to emphasize the sequential nature of the release.
Common error
Be mindful of the spelling: "instalment" is the British English spelling, while "installment" is the American English spelling. Choose the spelling that aligns with your target audience.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "fourth instalment" functions as a noun phrase, typically used as an object or complement in a sentence. It identifies a specific, numbered part within a sequence or series, as seen in the Ludwig examples.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Academia
0%
Ludwig's WRAP-UP
In summary, the phrase "fourth instalment" is a grammatically sound and very common term, predominantly used in News & Media contexts. Ludwig confirms that this phrase is widely accepted and denotes the fourth part of a sequential series. It is crucial to remember the British English spelling ("instalment") versus the American English spelling ("installment") based on the target audience. When seeking alternatives, consider contextually appropriate options such as "fourth part" or "fourth episode".
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
fourth part
A more generic substitute, usable in many contexts where 'instalment' fits, but lacks the nuance of sequential release.
part four
Simple and direct alternative, lacking the suggestion of serialized release inherent in 'instalment'.
fourth episode
Refers to the fourth episode specifically within a broadcast series; narrower context than instalment.
fourth segment
Suitable when referring to a section or portion within something larger, like a broadcast or presentation.
sequence four
A neutral alternative indicating the number 4 in a process.
volume four
Applies primarily to multi-volume publications, indicating a specific numbered volume.
the fourth phase
Suitable when dividing a project into distinct phases.
chapter four
Used specifically when referencing a chapter in a book.
book four
Another specific example referring to the fourth book.
the next chapter
More metaphorical, implying a continuation or development rather than a literal part.
FAQs
What does "fourth instalment" mean?
The phrase "fourth instalment" refers to the fourth part or episode in a series of works, like books, films, or games released over time. It indicates a continuation or a sequential release of related content.
Which is correct: "fourth instalment" or "fourth installment"?
"Fourth instalment" and "fourth installment" are both correct, but they use different spellings. "Instalment" is the British English spelling, while "installment" is the American English spelling. The choice depends on the target audience and regional preference.
What can I say instead of "fourth instalment"?
You can use alternatives like "fourth part", "fourth episode" (if referring to a series), or "chapter four" (if referring to a book). The best alternative depends on the specific context.
How is "fourth instalment" typically used in a sentence?
Typically, "fourth instalment" is used to identify a specific part in a series. For example: "The "fourth instalment" of the series was the most thrilling." or "The studio announced the release date for the "fourth instalment" of the movie franchise."
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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested