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Finding the Third Proportional to 2,118 and 3,369

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Solution

The third proportional to 2,118 and 3,369 is: 5,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118 : 3,369 = 3,369 : x
  2. Step 2: Convert to fraction form
    2,118/3,369 = 3,369/x
  3. Step 3: Cross multiply
    2,118x = 3,369 × 3,369
  4. Step 4: Simplify right side
    2,118x = 11,350,161
  5. Step 5: Solve for x
    x = 11,350,161/2,118
  6. Step 6: Final answer
    x = 5,358.91

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.