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Finding the Fourth Proportional to 3,961.72, 5,942.22 and 1,772.20

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Solution

The fourth proportional to 3,961.72, 5,942.22 and 1,772.20 is: 2,658.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.72 : 5,942.22 = 1,772.20 : x
  2. Step 2: Convert to fraction form
    3,961.72/5,942.22 = 1,772.20/x
  3. Step 3: Cross multiply
    3,961.72x = 5,942.22 × 1,772.20
  4. Step 4: Simplify right side
    3,961.72x = 10,530,802.28
  5. Step 5: Solve for x
    x = 10,530,802.28/3,961.72
  6. Step 6: Final answer
    x = 2,658.14

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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.