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Finding the Fourth Proportional to 8,917.04, 13,375.02 and 3,919.29

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Solution

The fourth proportional to 8,917.04, 13,375.02 and 3,919.29 is: 5,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.04 : 13,375.02 = 3,919.29 : x
  2. Step 2: Convert to fraction form
    8,917.04/13,375.02 = 3,919.29/x
  3. Step 3: Cross multiply
    8,917.04x = 13,375.02 × 3,919.29
  4. Step 4: Simplify right side
    8,917.04x = 52,420,546.68
  5. Step 5: Solve for x
    x = 52,420,546.68/8,917.04
  6. Step 6: Final answer
    x = 5,878.70

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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.