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Finding the Third Proportional to 3,538 and 5,381

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Solution

The third proportional to 3,538 and 5,381 is: 8,184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538 : 5,381 = 5,381 : x
  2. Step 2: Convert to fraction form
    3,538/5,381 = 5,381/x
  3. Step 3: Cross multiply
    3,538x = 5,381 × 5,381
  4. Step 4: Simplify right side
    3,538x = 28,955,161
  5. Step 5: Solve for x
    x = 28,955,161/3,538
  6. Step 6: Final answer
    x = 8,184.05

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.