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A ratio is a comparison of values. In other words, 'a ratio describes how much of something exists in comparison with another'.
Example:
There are 2 eggs and 3 cups of flour.
Ratios can be shown in a variety of ways:
- Use ": "to set the values as 2:3.
- Perhaps we can use the word "to" as 2 to 3.
- It can also be expressed as a fraction \frac {2}{3}.
A proportion states that two ratios (or fractions) are the same.
Example:
We can easily see from the above picture that \frac {2}{3} = \frac {4}{6}.
In other words, 2 eggs out of 3 cups of flour is equal to 4 eggs out of 6 cups of flour.
There is no difference in the ratios. Therefore, they are proportional.
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