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Finding the Fourth Proportional to 7,652.80, 11,479.16 and 2,722.62

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Solution

The fourth proportional to 7,652.80, 11,479.16 and 2,722.62 is: 4,083.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,652.80 : 11,479.16 = 2,722.62 : x
  2. Step 2: Convert to fraction form
    7,652.80/11,479.16 = 2,722.62/x
  3. Step 3: Cross multiply
    7,652.80x = 11,479.16 × 2,722.62
  4. Step 4: Simplify right side
    7,652.80x = 31,253,397.41
  5. Step 5: Solve for x
    x = 31,253,397.41/7,652.80
  6. Step 6: Final answer
    x = 4,083.92

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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.