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Finding the Fourth Proportional to 8,638.97, 12,960.14 and 3,373.77

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Solution

The fourth proportional to 8,638.97, 12,960.14 and 3,373.77 is: 5,061.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.97 : 12,960.14 = 3,373.77 : x
  2. Step 2: Convert to fraction form
    8,638.97/12,960.14 = 3,373.77/x
  3. Step 3: Cross multiply
    8,638.97x = 12,960.14 × 3,373.77
  4. Step 4: Simplify right side
    8,638.97x = 43,724,490.36
  5. Step 5: Solve for x
    x = 43,724,490.36/8,638.97
  6. Step 6: Final answer
    x = 5,061.31

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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.