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Finding the Fourth Proportional to 7,491.52, 10,330.32 and 5,129.92

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Solution

The fourth proportional to 7,491.52, 10,330.32 and 5,129.92 is: 7,073.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,491.52 : 10,330.32 = 5,129.92 : x
  2. Step 2: Convert to fraction form
    7,491.52/10,330.32 = 5,129.92/x
  3. Step 3: Cross multiply
    7,491.52x = 10,330.32 × 5,129.92
  4. Step 4: Simplify right side
    7,491.52x = 52,993,715.17
  5. Step 5: Solve for x
    x = 52,993,715.17/7,491.52
  6. Step 6: Final answer
    x = 7,073.83

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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.