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Finding the Fourth Proportional to 5,151.52, 7,689.12 and 5,027.20

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Solution

The fourth proportional to 5,151.52, 7,689.12 and 5,027.20 is: 7,503.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.52 : 7,689.12 = 5,027.20 : x
  2. Step 2: Convert to fraction form
    5,151.52/7,689.12 = 5,027.20/x
  3. Step 3: Cross multiply
    5,151.52x = 7,689.12 × 5,027.20
  4. Step 4: Simplify right side
    5,151.52x = 38,654,744.06
  5. Step 5: Solve for x
    x = 38,654,744.06/5,151.52
  6. Step 6: Final answer
    x = 7,503.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.