# Single rule of three direct online

In Mathematics | Keywords | Thanks to...

Find out **x**, in such proportion to **c** as **b** is to **a**.

**For example:**

If 4 kg of a product cost $36, how much would be the cost of 18 kg? **Answer:** a: 4, b: 36, c: 18, x: 162 ($162)

If 2 liters of paint are required to paint 5 rooms, how many liters are required to paint 7 rooms? **Answer:** a: 5, b: 2, c: 7, x: 2.8 (liters)

#### Options

- Value of a
- Value of b
- Value of c
- Number of decimal places (round)

#### Result

Calculate!
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