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Finding the Fourth Proportional to 8,898, 12,278.96 and 4,864.80

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Solution

The fourth proportional to 8,898, 12,278.96 and 4,864.80 is: 6,713.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898 : 12,278.96 = 4,864.80 : x
  2. Step 2: Convert to fraction form
    8,898/12,278.96 = 4,864.80/x
  3. Step 3: Cross multiply
    8,898x = 12,278.96 × 4,864.80
  4. Step 4: Simplify right side
    8,898x = 59,734,684.61
  5. Step 5: Solve for x
    x = 59,734,684.61/8,898
  6. Step 6: Final answer
    x = 6,713.27

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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.