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Finding the Third Proportional to 3,069 and 3,988

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Solution

The third proportional to 3,069 and 3,988 is: 5,182.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,069 : 3,988 = 3,988 : x
  2. Step 2: Convert to fraction form
    3,069/3,988 = 3,988/x
  3. Step 3: Cross multiply
    3,069x = 3,988 × 3,988
  4. Step 4: Simplify right side
    3,069x = 15,904,144
  5. Step 5: Solve for x
    x = 15,904,144/3,069
  6. Step 6: Final answer
    x = 5,182.19

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.