To find a ratio, you simply compare two or more quantities. A ratio shows how much of one thing there is compared to another. It’s usually written in the form of
A:B or
A to B.
Here’s a simple step-by-step guide:
- Identify the quantities you want to compare.
For example, if you have 4 apples and 6 oranges, these are the two quantities you’re comparing.
- Write the quantities in the ratio format.
The ratio of apples to oranges would be written as
4:6.
- Simplify the ratio, if possible.
If both numbers can be divided by the same number, divide them. In this case, both 4 and 6 can be divided by 2.
- 4 ÷ 2 = 2
- 6 ÷ 2 = 3
So, the simplified ratio is
2:3.
Example:
- If there are 8 red balls and 12 blue balls, the ratio of red balls to blue balls is 8:12.
- Divide both numbers by 4 (their greatest common divisor):
- 8 ÷ 4 = 2
- 12 ÷ 4 = 3
- The ratio is simplified to 2:3.
Key Tips:
- Ratios can be simplified just like fractions.
- You can also write ratios as fractions (e.g., 2/3), percentages, or use a colon (e.g., 2:3).
- Make sure you’re comparing the same types of quantities. For example, you wouldn't compare apples to oranges in a ratio unless you’re talking about a similar quantity (like apples to oranges of the same weight).
Does that make sense, or would you like to see another example?