Online Calculator

Proportion calculator

Solve equivalent proportions and simplify ratios between two quantities.

Solve an equivalent proportion in the form A:B = C:X.

Valor de X

15

Relación A:B simplificada

2:3

Information

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Instant result

The result is updated directly from the data entered.

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Local processing

The calculations are done in your browser and do not require sending data to a server.

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Free

No registration, subscription, or paid API required.

Frequently asked questions

What proportion does it solve?

The proportion A:B = C:X.

How does it calculate X?

Use X = (B × C) ÷ A.

A: B?

Yes, when A and B are nonzero integers.

Is it like a rule of three?

Yes, but it also shows the simplified ratio A:B.

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