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Finding the Third Proportional to 3,388 and 3,988

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Solution

The third proportional to 3,388 and 3,988 is: 4,694.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388 : 3,988 = 3,988 : x
  2. Step 2: Convert to fraction form
    3,388/3,988 = 3,988/x
  3. Step 3: Cross multiply
    3,388x = 3,988 × 3,988
  4. Step 4: Simplify right side
    3,388x = 15,904,144
  5. Step 5: Solve for x
    x = 15,904,144/3,388
  6. Step 6: Final answer
    x = 4,694.26

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.