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Finding the Fourth Proportional to 8,976.80, 12,399.09 and 6,335.99

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Solution

The fourth proportional to 8,976.80, 12,399.09 and 6,335.99 is: 8,751.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.80 : 12,399.09 = 6,335.99 : x
  2. Step 2: Convert to fraction form
    8,976.80/12,399.09 = 6,335.99/x
  3. Step 3: Cross multiply
    8,976.80x = 12,399.09 × 6,335.99
  4. Step 4: Simplify right side
    8,976.80x = 78,560,517.49
  5. Step 5: Solve for x
    x = 78,560,517.49/8,976.80
  6. Step 6: Final answer
    x = 8,751.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.