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The rule of three The simple rule of three is the method for determining proportionality. The simple rule of three is a mathematical method that allows one of the terms of an equation of proportionality to be determined based on the others. The rule is to calculate the fourth proportional of the proportions: a / b = c / x The Rule of Three is a Mathematical Rule that allows you to solve problems based on proportions. By having three numbers: a, b, c, such that, ( a / b = c / x), you can calculate the unknown number |
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Enter 3 values |
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The simple rule of three is a mathematical method that is based on the equality of products on the diagonal, respectively on the calculation of an unknown when 3 numbers are known. Example: 20 m of material cost 180 usd. How much does 45 m of the same material cost? |
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