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Finding the Fourth Proportional to 5,132.95, 7,691.18 and 4,640.87

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Solution

The fourth proportional to 5,132.95, 7,691.18 and 4,640.87 is: 6,953.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,132.95 : 7,691.18 = 4,640.87 : x
  2. Step 2: Convert to fraction form
    5,132.95/7,691.18 = 4,640.87/x
  3. Step 3: Cross multiply
    5,132.95x = 7,691.18 × 4,640.87
  4. Step 4: Simplify right side
    5,132.95x = 35,693,762.55
  5. Step 5: Solve for x
    x = 35,693,762.55/5,132.95
  6. Step 6: Final answer
    x = 6,953.85

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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.