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Finding the Fourth Proportional to 3,957.45, 5,940.27 and 2,918.61

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Solution

The fourth proportional to 3,957.45, 5,940.27 and 2,918.61 is: 4,380.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.45 : 5,940.27 = 2,918.61 : x
  2. Step 2: Convert to fraction form
    3,957.45/5,940.27 = 2,918.61/x
  3. Step 3: Cross multiply
    3,957.45x = 5,940.27 × 2,918.61
  4. Step 4: Simplify right side
    3,957.45x = 17,337,331.42
  5. Step 5: Solve for x
    x = 17,337,331.42/3,957.45
  6. Step 6: Final answer
    x = 4,380.94

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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.