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Finding the Fourth Proportional to 8,917.28, 13,373.88 and 3,371.20

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Solution

The fourth proportional to 8,917.28, 13,373.88 and 3,371.20 is: 5,056.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.28 : 13,373.88 = 3,371.20 : x
  2. Step 2: Convert to fraction form
    8,917.28/13,373.88 = 3,371.20/x
  3. Step 3: Cross multiply
    8,917.28x = 13,373.88 × 3,371.20
  4. Step 4: Simplify right side
    8,917.28x = 45,086,024.26
  5. Step 5: Solve for x
    x = 45,086,024.26/8,917.28
  6. Step 6: Final answer
    x = 5,056.03

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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.