Cross Multiplication

Calculate Cross Multiplication instantly with the exact formula and a worked example.

Cross Multiplication

a
b
c
d = b·c/a
8
Calculate Cross Multiplication instantly with the exact formula and a worked example.

More about: Cross Multiplication

What it calculates

The “Cross Multiplication” calculator computes d = b·c/a from 3 parameters: a, b, c.

A core calculation for studying, engineering tasks, and checking solutions.

Example calculation

With parameters a = 3, b = 4, c = 6 the result is 8.

How to use

  1. Enter a, b and c — each field above is adjustable with a slider.
  2. d = b·c/a is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is Cross Multiplication calculated?
The Cross Multiplication calculator computes d = b·c/a from a, b, c. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Cross Multiplication calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.

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