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Finding the Fourth Proportional to 8,991.71, 13,489.84 and 3,148.17

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Solution

The fourth proportional to 8,991.71, 13,489.84 and 3,148.17 is: 4,723.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.71 : 13,489.84 = 3,148.17 : x
  2. Step 2: Convert to fraction form
    8,991.71/13,489.84 = 3,148.17/x
  3. Step 3: Cross multiply
    8,991.71x = 13,489.84 × 3,148.17
  4. Step 4: Simplify right side
    8,991.71x = 42,468,262.94
  5. Step 5: Solve for x
    x = 42,468,262.94/8,991.71
  6. Step 6: Final answer
    x = 4,723.05

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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.