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Everyday arithmetic

Proportion solver

Proportion solver: x = b × c ÷ a

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Your inputs are processed locally and are not added to analytics or saved history.

YOUR RESULT
Ready when you are.

Enter your values, then select Calculate.

How it works

x = b × c ÷ a

Input definitions

a in a/b = c/x
Enter the value in the labeled unit.
b
Enter the value in the labeled unit.
c
Enter the value in the labeled unit.

A worked example

a in a/b = c/x
2
b
3
c
4
6

Assumptions & limits

Uses the stated input units. Results are rounded for display; keep additional precision for subsequent calculations.

Sources & review

Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.

Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.

Common questions

Can I check the result before using it?

Compare the worked example with your inputs and use the stated method: x = b × c ÷ a. Confirm input units and boundary choices before relying on the result.

How does the Proportion solver tool work?

The tool applies this method: x = b × c ÷ a.

What are the assumptions and limits of Proportion solver?

Uses the stated input units. Results are rounded for display; keep additional precision for subsequent calculations.

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