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Finding the Fourth Proportional to 6,489.92, 8,952.72 and 4,127.96

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Solution

The fourth proportional to 6,489.92, 8,952.72 and 4,127.96 is: 5,694.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489.92 : 8,952.72 = 4,127.96 : x
  2. Step 2: Convert to fraction form
    6,489.92/8,952.72 = 4,127.96/x
  3. Step 3: Cross multiply
    6,489.92x = 8,952.72 × 4,127.96
  4. Step 4: Simplify right side
    6,489.92x = 36,956,470.05
  5. Step 5: Solve for x
    x = 36,956,470.05/6,489.92
  6. Step 6: Final answer
    x = 5,694.44

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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.