3.4.1

Proportion

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Proportion

Two pairs of numbers are in proportion if the ratio between the first pair is equivalent to the ratio between the second pair.

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Ratios in proportion

  • An equals sign between two ratios means that the two ratios are in proportion.
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Worded problems

  • Worded problems can be converted into proportions.
  • ‘The ratio of male to female pupils on a school trip is 5 : 2’
    • This can be written as m : f = 5 : 2
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Proportions and fractions

  • Proportions can be converted into an equation involving fractions.

Jump to other topics

1Number

1.1Place Value

1.2Factors & Multiples

1.3Operations

1.4Fractions, Decimals & Percentages

1.5Growth & Decay

1.6Measurements & Units

1.7Accuracy

2Algebra

3Ratio, Proportion & Rates of Change

4Geometry & Measures

5Probability

6Statistics

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