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Finding the Fourth Proportional to 7,957.26, 10,972.17 and 5,439.78

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Solution

The fourth proportional to 7,957.26, 10,972.17 and 5,439.78 is: 7,500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.26 : 10,972.17 = 5,439.78 : x
  2. Step 2: Convert to fraction form
    7,957.26/10,972.17 = 5,439.78/x
  3. Step 3: Cross multiply
    7,957.26x = 10,972.17 × 5,439.78
  4. Step 4: Simplify right side
    7,957.26x = 59,686,190.92
  5. Step 5: Solve for x
    x = 59,686,190.92/7,957.26
  6. Step 6: Final answer
    x = 7,500.85

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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.