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Finding the Fourth Proportional to 3,960.73, 5,943.12 and 2,645.38

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Solution

The fourth proportional to 3,960.73, 5,943.12 and 2,645.38 is: 3,969.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.73 : 5,943.12 = 2,645.38 : x
  2. Step 2: Convert to fraction form
    3,960.73/5,943.12 = 2,645.38/x
  3. Step 3: Cross multiply
    3,960.73x = 5,943.12 × 2,645.38
  4. Step 4: Simplify right side
    3,960.73x = 15,721,810.79
  5. Step 5: Solve for x
    x = 15,721,810.79/3,960.73
  6. Step 6: Final answer
    x = 3,969.42

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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.