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Finding the Fourth Proportional to 8,760.27, 13,142.39 and 2,917.11

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Solution

The fourth proportional to 8,760.27, 13,142.39 and 2,917.11 is: 4,376.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.27 : 13,142.39 = 2,917.11 : x
  2. Step 2: Convert to fraction form
    8,760.27/13,142.39 = 2,917.11/x
  3. Step 3: Cross multiply
    8,760.27x = 13,142.39 × 2,917.11
  4. Step 4: Simplify right side
    8,760.27x = 38,337,782.71
  5. Step 5: Solve for x
    x = 38,337,782.71/8,760.27
  6. Step 6: Final answer
    x = 4,376.32

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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.