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Finding the Fourth Proportional to 8,761.13, 13,136.83 and 2,914.55

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Solution

The fourth proportional to 8,761.13, 13,136.83 and 2,914.55 is: 4,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.13 : 13,136.83 = 2,914.55 : x
  2. Step 2: Convert to fraction form
    8,761.13/13,136.83 = 2,914.55/x
  3. Step 3: Cross multiply
    8,761.13x = 13,136.83 × 2,914.55
  4. Step 4: Simplify right side
    8,761.13x = 38,287,867.62
  5. Step 5: Solve for x
    x = 38,287,867.62/8,761.13
  6. Step 6: Final answer
    x = 4,370.20

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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.