The fourth proportion of the numbers 7, 28, and 4 is:
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1
Answer:
Answer: Let the fourth proportional to the numbers 4, 9, and 12 be x. Then from the definition of the fourth proportional, we must have:
4: 9 :: 12 : x or in terms of the fractions we can write;
4x = 9 × 12. In other words, we have x = {9 × 12}/4 = 27. Thus the correct option is D) 27
I explain you from another example
Answered by
0
Answer:
16
Step-by-step explanation:
7:28=4:x
1:4=4:x
1/4=4/x
x=4×4
x=16
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