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Finding the Fourth Proportional to 8,761.94, 13,142.02 and 2,917.92

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Solution

The fourth proportional to 8,761.94, 13,142.02 and 2,917.92 is: 4,376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.94 : 13,142.02 = 2,917.92 : x
  2. Step 2: Convert to fraction form
    8,761.94/13,142.02 = 2,917.92/x
  3. Step 3: Cross multiply
    8,761.94x = 13,142.02 × 2,917.92
  4. Step 4: Simplify right side
    8,761.94x = 38,347,363.00
  5. Step 5: Solve for x
    x = 38,347,363.00/8,761.94
  6. Step 6: Final answer
    x = 4,376.58

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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.