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Finding the Fourth Proportional to 8,469.92, 11,689.68 and 4,935.08

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Solution

The fourth proportional to 8,469.92, 11,689.68 and 4,935.08 is: 6,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.92 : 11,689.68 = 4,935.08 : x
  2. Step 2: Convert to fraction form
    8,469.92/11,689.68 = 4,935.08/x
  3. Step 3: Cross multiply
    8,469.92x = 11,689.68 × 4,935.08
  4. Step 4: Simplify right side
    8,469.92x = 57,689,505.97
  5. Step 5: Solve for x
    x = 57,689,505.97/8,469.92
  6. Step 6: Final answer
    x = 6,811.10

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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.