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Finding the Fourth Proportional to 8,687.97, 13,038.26 and 4,005.09

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Solution

The fourth proportional to 8,687.97, 13,038.26 and 4,005.09 is: 6,010.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.97 : 13,038.26 = 4,005.09 : x
  2. Step 2: Convert to fraction form
    8,687.97/13,038.26 = 4,005.09/x
  3. Step 3: Cross multiply
    8,687.97x = 13,038.26 × 4,005.09
  4. Step 4: Simplify right side
    8,687.97x = 52,219,384.72
  5. Step 5: Solve for x
    x = 52,219,384.72/8,687.97
  6. Step 6: Final answer
    x = 6,010.54

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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.