2.5.8

Proportion

Test yourself

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

1Proof

2Algebra & Functions

2.1Powers & Roots

2.2Quadratic Equations

2.3Inequalities

2.4Polynomials

2.5Graphs

2.6Functions

2.7Transformation of Graphs

2.8Partial Fractions (A2 Only)

3Coordinate Geometry

4Sequences & Series

5Trigonometry

6Exponentials & Logarithms

7Differentiation

8Integration

9Numerical Methods

10Vectors

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