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Finding the Fourth Proportional to 8,616.85, 12,920.46 and 3,348.56

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Solution

The fourth proportional to 8,616.85, 12,920.46 and 3,348.56 is: 5,020.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.85 : 12,920.46 = 3,348.56 : x
  2. Step 2: Convert to fraction form
    8,616.85/12,920.46 = 3,348.56/x
  3. Step 3: Cross multiply
    8,616.85x = 12,920.46 × 3,348.56
  4. Step 4: Simplify right side
    8,616.85x = 43,264,935.54
  5. Step 5: Solve for x
    x = 43,264,935.54/8,616.85
  6. Step 6: Final answer
    x = 5,020.97

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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.