Proportion Calculator
Solve a direct proportion using three known values: X = (B × C) ÷ A.
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How to use
- 01Enter A and B for the first pair.
- 02Enter C for the second pair.
- 03Read the value of X. A must be nonzero.
Everyday benefits
- Free to use
- Works in modern browsers
- No installation required
Frequently asked questions
Do I need to install an app?
No. Open the tool in a modern browser to use it.