Write an equivalent ratio
Key Notes :
🎈 To find an equivalent ratio, multiply or divide both numbers in a ratio by the same value.
Learn with an example
▶️ Find the number that makes the ratio equivalent to 1:4.
8: ______
Complete the ratio 8: ___ so that it is equivalent to 1:4.The second number is missing from 8: ____.
So, compare the first numbers of the two ratios.
1:4
8: ___
To get 8 from 1, multiply by 8.
So, to get ____ from the second number in 1:4, multiply by 8.
4 . 8 = 32
This means 8:32 and 1:4 are equivalent ratios.
▶️ Find the number that makes the ratio equivalent to 1:3.
9: ______
Complete the ratio 9: ____ so that it is equivalent to 1:3.The second number is missing from 9:____.
So, compare the first numbers of the two ratios.
1:3
9: ___
To get 9 from 1, multiply by 9.
So, to get ___ from the second number in 1:3, multiply by 9.
3 . 9 = 27
This means 9:27 and 1:3 are equivalent ratios.
▶️ Find the number that makes the ratio equivalent to 1:2.
6:________
Complete the ratio 6: ___ so that it is equivalent to 1:2.
The second number is missing from 6: ___.
So, compare the first numbers of the two ratios.
1:2
6: ____
To get 6 from 1, multiply by 6.
So, to get ______ from the second number in 1:2, multiply by 6.
2 . 6 = 12
This means 6:12 and 1:2 are equivalent ratios.
let’s practice! 🖊️
