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Finding the Fourth Proportional to 2,722.62, 3,761.01 and 2,621.47

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Solution

The fourth proportional to 2,722.62, 3,761.01 and 2,621.47 is: 3,621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.62 : 3,761.01 = 2,621.47 : x
  2. Step 2: Convert to fraction form
    2,722.62/3,761.01 = 2,621.47/x
  3. Step 3: Cross multiply
    2,722.62x = 3,761.01 × 2,621.47
  4. Step 4: Simplify right side
    2,722.62x = 9,859,374.88
  5. Step 5: Solve for x
    x = 9,859,374.88/2,722.62
  6. Step 6: Final answer
    x = 3,621.28

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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.