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Finding the Fourth Proportional to 8,781.69, 13,171.11 and 3,233.67

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Solution

The fourth proportional to 8,781.69, 13,171.11 and 3,233.67 is: 4,849.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.69 : 13,171.11 = 3,233.67 : x
  2. Step 2: Convert to fraction form
    8,781.69/13,171.11 = 3,233.67/x
  3. Step 3: Cross multiply
    8,781.69x = 13,171.11 × 3,233.67
  4. Step 4: Simplify right side
    8,781.69x = 42,591,023.27
  5. Step 5: Solve for x
    x = 42,591,023.27/8,781.69
  6. Step 6: Final answer
    x = 4,849.98

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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.