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Finding the Third Proportional to 3,928 and 8,538

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Solution

The third proportional to 3,928 and 8,538 is: 18,558.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928 : 8,538 = 8,538 : x
  2. Step 2: Convert to fraction form
    3,928/8,538 = 8,538/x
  3. Step 3: Cross multiply
    3,928x = 8,538 × 8,538
  4. Step 4: Simplify right side
    3,928x = 72,897,444
  5. Step 5: Solve for x
    x = 72,897,444/3,928
  6. Step 6: Final answer
    x = 18,558.41

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.