use each number once to form three proportions.
1,2,10,4,12,20
15,5,16,6,8,3
2/5
25/7
To form proportions, we need to have two ratios with equal values. Let's use the given numbers to create three proportions:
Proportion 1: 1/2 = 10/20
To form this proportion, we compare the values of 1 and 2 with the values of 10 and 20. Both ratios are equal (1/2 = 10/20).
Proportion 2: 4/12 = 8/24
Here, we compare the values of 4 and 12 with the values of 8 and 24. Notice that we multiply each value by 2 to obtain equivalent ratios. The ratios 4/12 and 8/24 are equal.
Proportion 3: 1/15 = 6/90
In this case, we compare the values of 1 and 15 with the values of 6 and 90. Again, we multiply each value by 6 to get equivalent ratios. Thus, 1/15 and 6/90 are equal proportions.
Remember, when forming proportions, it is essential to have two ratios where the values are equal when simplified.