# Check whether the given ratios are equal, i.e. they are in proportion. If yes, then write them in the proper form. 1. 1 : 5 and 3 : 15 2. 2 : 9 and 18 : 81 3. 15 : 45 and 5 : 25 4. 4 : 12 and 9 : 27 5.  10 to  15 and 4 to 6

1. 1 : 5 and 3 : 15

So the ratios are in proportion
2. 2 : 9 and 18 : 81

So So the ratios are in proportion
3. 15 : 45 and 5 : 25

The given ratios are not equal, so they are not in proportion
4. 4 : 12 and 9 : 27

The given ratios are equal, so they are in proportion
5.  10 to  15 and 4 to 6

The given ratios are equal, so they are in proportion

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