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Finding the Fourth Proportional to 8,661.71, 12,998.41 and 3,731.85

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Solution

The fourth proportional to 8,661.71, 12,998.41 and 3,731.85 is: 5,600.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.71 : 12,998.41 = 3,731.85 : x
  2. Step 2: Convert to fraction form
    8,661.71/12,998.41 = 3,731.85/x
  3. Step 3: Cross multiply
    8,661.71x = 12,998.41 × 3,731.85
  4. Step 4: Simplify right side
    8,661.71x = 48,508,107.03
  5. Step 5: Solve for x
    x = 48,508,107.03/8,661.71
  6. Step 6: Final answer
    x = 5,600.29

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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.