Ratio calculator
Enter the known ratio terms and the matching value.
Result
In the ratio 2:5, if the first part is 8, the second is 20.
Example
Solve proportional ratios by finding the missing term.
In the ratio 2:5, if the first part is 8, the second is 20.
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Methodology
The missing term keeps the ratio constant: a/b = knownA/knownB.
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