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Finding the Fourth Proportional to 6,615.90, 9,924.13 and 2,917.28

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Solution

The fourth proportional to 6,615.90, 9,924.13 and 2,917.28 is: 4,376.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.90 : 9,924.13 = 2,917.28 : x
  2. Step 2: Convert to fraction form
    6,615.90/9,924.13 = 2,917.28/x
  3. Step 3: Cross multiply
    6,615.90x = 9,924.13 × 2,917.28
  4. Step 4: Simplify right side
    6,615.90x = 28,951,465.97
  5. Step 5: Solve for x
    x = 28,951,465.97/6,615.90
  6. Step 6: Final answer
    x = 4,376.04

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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.