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Finding the Fourth Proportional to 8,917.15, 13,376.10 and 3,073.78

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Solution

The fourth proportional to 8,917.15, 13,376.10 and 3,073.78 is: 4,610.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.15 : 13,376.10 = 3,073.78 : x
  2. Step 2: Convert to fraction form
    8,917.15/13,376.10 = 3,073.78/x
  3. Step 3: Cross multiply
    8,917.15x = 13,376.10 × 3,073.78
  4. Step 4: Simplify right side
    8,917.15x = 41,115,188.66
  5. Step 5: Solve for x
    x = 41,115,188.66/8,917.15
  6. Step 6: Final answer
    x = 4,610.80

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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.