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Finding the Fourth Proportional to 8,791.81, 13,175.87 and 3,239.87

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Solution

The fourth proportional to 8,791.81, 13,175.87 and 3,239.87 is: 4,855.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.81 : 13,175.87 = 3,239.87 : x
  2. Step 2: Convert to fraction form
    8,791.81/13,175.87 = 3,239.87/x
  3. Step 3: Cross multiply
    8,791.81x = 13,175.87 × 3,239.87
  4. Step 4: Simplify right side
    8,791.81x = 42,688,023.86
  5. Step 5: Solve for x
    x = 42,688,023.86/8,791.81
  6. Step 6: Final answer
    x = 4,855.43

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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.