Home / 3,987.30-5,503.11-2,871.96

Finding the Fourth Proportional to 3,987.30, 5,503.11 and 2,871.96

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Solution

The fourth proportional to 3,987.30, 5,503.11 and 2,871.96 is: 3,963.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.30 : 5,503.11 = 2,871.96 : x
  2. Step 2: Convert to fraction form
    3,987.30/5,503.11 = 2,871.96/x
  3. Step 3: Cross multiply
    3,987.30x = 5,503.11 × 2,871.96
  4. Step 4: Simplify right side
    3,987.30x = 15,804,711.80
  5. Step 5: Solve for x
    x = 15,804,711.80/3,987.30
  6. Step 6: Final answer
    x = 3,963.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.