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Finding the Fourth Proportional to 3,324.31, 4,986.87 and 1,377.88

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Solution

The fourth proportional to 3,324.31, 4,986.87 and 1,377.88 is: 2,066.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,324.31 : 4,986.87 = 1,377.88 : x
  2. Step 2: Convert to fraction form
    3,324.31/4,986.87 = 1,377.88/x
  3. Step 3: Cross multiply
    3,324.31x = 4,986.87 × 1,377.88
  4. Step 4: Simplify right side
    3,324.31x = 6,871,308.44
  5. Step 5: Solve for x
    x = 6,871,308.44/3,324.31
  6. Step 6: Final answer
    x = 2,066.99

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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.