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Finding the Fourth Proportional to 8,781.03, 13,176 and 5,086.62

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Solution

The fourth proportional to 8,781.03, 13,176 and 5,086.62 is: 7,632.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.03 : 13,176 = 5,086.62 : x
  2. Step 2: Convert to fraction form
    8,781.03/13,176 = 5,086.62/x
  3. Step 3: Cross multiply
    8,781.03x = 13,176 × 5,086.62
  4. Step 4: Simplify right side
    8,781.03x = 67,021,305.12
  5. Step 5: Solve for x
    x = 67,021,305.12/8,781.03
  6. Step 6: Final answer
    x = 7,632.51

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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.