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Finding the Fourth Proportional to 5,572.38, 7,691.02 and 3,214.20

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Solution

The fourth proportional to 5,572.38, 7,691.02 and 3,214.20 is: 4,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,572.38 : 7,691.02 = 3,214.20 : x
  2. Step 2: Convert to fraction form
    5,572.38/7,691.02 = 3,214.20/x
  3. Step 3: Cross multiply
    5,572.38x = 7,691.02 × 3,214.20
  4. Step 4: Simplify right side
    5,572.38x = 24,720,476.48
  5. Step 5: Solve for x
    x = 24,720,476.48/5,572.38
  6. Step 6: Final answer
    x = 4,436.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.