A ratio is made up of two ratios with a ratio of 5 / 3

A ratio is made up of two ratios with a ratio of 5 / 3

5：3=10：6

What is the ratio of 5 / 12 to 2 / 3?

5 out of 8

The two introverts of a proportion are 3 and 12 respectively. The ratio of the two ratios of a proportion is 5 / 4. Write this ratio
No equations

The first item is 3 × 4 / 5 = 4 / 15, the fourth item is 12 ／ 4 / 5 = 5 / 48, the ratio is 15 / 4:3 = 12 / 5 / 48. If you don't understand this question, you can ask. If you are satisfied, please click "adopt as a satisfactory answer". If you have any other questions, please click me for help. The answer is not easy, please understand. Thank you