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Finding the Fourth Proportional to 8,918.90, 13,375.41 and 2,677.71

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Solution

The fourth proportional to 8,918.90, 13,375.41 and 2,677.71 is: 4,015.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.90 : 13,375.41 = 2,677.71 : x
  2. Step 2: Convert to fraction form
    8,918.90/13,375.41 = 2,677.71/x
  3. Step 3: Cross multiply
    8,918.90x = 13,375.41 × 2,677.71
  4. Step 4: Simplify right side
    8,918.90x = 35,815,469.11
  5. Step 5: Solve for x
    x = 35,815,469.11/8,918.90
  6. Step 6: Final answer
    x = 4,015.68

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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.