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Finding the Fourth Proportional to 3,958.88, 5,938.92 and 2,871.45

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Solution

The fourth proportional to 3,958.88, 5,938.92 and 2,871.45 is: 4,307.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.88 : 5,938.92 = 2,871.45 : x
  2. Step 2: Convert to fraction form
    3,958.88/5,938.92 = 2,871.45/x
  3. Step 3: Cross multiply
    3,958.88x = 5,938.92 × 2,871.45
  4. Step 4: Simplify right side
    3,958.88x = 17,053,311.83
  5. Step 5: Solve for x
    x = 17,053,311.83/3,958.88
  6. Step 6: Final answer
    x = 4,307.62

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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.