No.
To determine if the ratios 2.5:4 and 7:11.2 are proportional, you can set up a proportion and cross-multiply. This gives you 2.5 * 11.2 = 4 * 7. Calculating both sides, you find that 28 = 28, confirming that the two ratios are indeed proportional.
the ratios of 28 and 7 is 25%
They are equivalent.
7
7 to 2, 28 to 8 and 56 to 16
In order to determine if two sets of numbers are proportional, you need to compare their ratios. For 7 and 9, the ratio is 7/9, which simplifies to 0.777. For 70 and 90, the ratio is 70/90, which simplifies to 0.778. Since these two ratios are not equal, 7 and 9 are not proportional to 70 and 90.
No. 4/7 and 16/28 and 28/49 are equivalent ratios. The 4 and the 7 must be multiplied by the same number in order to maintain the ratio.
To determine if the ratios 28 to 49 and 36 to 63 are equal, we can simplify both ratios. The ratio 28 to 49 simplifies to 4 to 7 (since both numbers can be divided by 7). The ratio 36 to 63 simplifies to 4 to 7 as well (since both numbers can be divided by 9). Therefore, the ratios 28 to 49 and 36 to 63 are equal.
2:7
28 = 2 × 2 × 7 = 2² × 7.
787
7