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Finding the Fourth Proportional to 8,722.62, 13,083.53 and 2,878.88

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Solution

The fourth proportional to 8,722.62, 13,083.53 and 2,878.88 is: 4,318.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.62 : 13,083.53 = 2,878.88 : x
  2. Step 2: Convert to fraction form
    8,722.62/13,083.53 = 2,878.88/x
  3. Step 3: Cross multiply
    8,722.62x = 13,083.53 × 2,878.88
  4. Step 4: Simplify right side
    8,722.62x = 37,665,833.03
  5. Step 5: Solve for x
    x = 37,665,833.03/8,722.62
  6. Step 6: Final answer
    x = 4,318.18

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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.