Home / 1,516.16-2,274.24-747.20

Finding the Fourth Proportional to 1,516.16, 2,274.24 and 747.20

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Solution

The fourth proportional to 1,516.16, 2,274.24 and 747.20 is: 1,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.16 : 2,274.24 = 747.20 : x
  2. Step 2: Convert to fraction form
    1,516.16/2,274.24 = 747.20/x
  3. Step 3: Cross multiply
    1,516.16x = 2,274.24 × 747.20
  4. Step 4: Simplify right side
    1,516.16x = 1,699,312.13
  5. Step 5: Solve for x
    x = 1,699,312.13/1,516.16
  6. Step 6: Final answer
    x = 1,120.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.