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Finding the Fourth Proportional to 8,761.43, 13,142.16 and 2,520.00

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Solution

The fourth proportional to 8,761.43, 13,142.16 and 2,520.00 is: 3,780.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.43 : 13,142.16 = 2,520.00 : x
  2. Step 2: Convert to fraction form
    8,761.43/13,142.16 = 2,520.00/x
  3. Step 3: Cross multiply
    8,761.43x = 13,142.16 × 2,520.00
  4. Step 4: Simplify right side
    8,761.43x = 33,118,228.26
  5. Step 5: Solve for x
    x = 33,118,228.26/8,761.43
  6. Step 6: Final answer
    x = 3,780.00

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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.