Ratios equivalent to 2:1 have the same relationship between the two quantities. Here are some examples:
- 4:2
- 6:3
- 8:4
- 10:5
- 12:6
- 14:7
- 16:8
- 20:10
You can also express the ratio in fractional form. For example, 2:1 can also be written as \( \frac{2}{1} \), \( \frac{4}{2} \), \( \frac{6}{3} \), etc. Any ratio of the form \( \frac{2x}{x} \) where \( x \) is a positive number will be equivalent to 2:1.