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Finding the Fourth Proportional to 3,971.82, 5,952.87 and 1,371.72

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Solution

The fourth proportional to 3,971.82, 5,952.87 and 1,371.72 is: 2,055.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.82 : 5,952.87 = 1,371.72 : x
  2. Step 2: Convert to fraction form
    3,971.82/5,952.87 = 1,371.72/x
  3. Step 3: Cross multiply
    3,971.82x = 5,952.87 × 1,371.72
  4. Step 4: Simplify right side
    3,971.82x = 8,165,670.84
  5. Step 5: Solve for x
    x = 8,165,670.84/3,971.82
  6. Step 6: Final answer
    x = 2,055.90

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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.