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Finding the Fourth Proportional to 7,125.87, 10,691.17 and 4,490.33

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Solution

The fourth proportional to 7,125.87, 10,691.17 and 4,490.33 is: 6,736.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.87 : 10,691.17 = 4,490.33 : x
  2. Step 2: Convert to fraction form
    7,125.87/10,691.17 = 4,490.33/x
  3. Step 3: Cross multiply
    7,125.87x = 10,691.17 × 4,490.33
  4. Step 4: Simplify right side
    7,125.87x = 48,006,881.39
  5. Step 5: Solve for x
    x = 48,006,881.39/7,125.87
  6. Step 6: Final answer
    x = 6,736.99

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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.