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Finding the Fourth Proportional to 8,717.61, 13,076.11 and 2,874.07

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Solution

The fourth proportional to 8,717.61, 13,076.11 and 2,874.07 is: 4,311.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.61 : 13,076.11 = 2,874.07 : x
  2. Step 2: Convert to fraction form
    8,717.61/13,076.11 = 2,874.07/x
  3. Step 3: Cross multiply
    8,717.61x = 13,076.11 × 2,874.07
  4. Step 4: Simplify right side
    8,717.61x = 37,581,655.47
  5. Step 5: Solve for x
    x = 37,581,655.47/8,717.61
  6. Step 6: Final answer
    x = 4,311.00

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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.