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Finding the Third Proportional to 2,208 and 3,421

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Solution

The third proportional to 2,208 and 3,421 is: 5,300.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208 : 3,421 = 3,421 : x
  2. Step 2: Convert to fraction form
    2,208/3,421 = 3,421/x
  3. Step 3: Cross multiply
    2,208x = 3,421 × 3,421
  4. Step 4: Simplify right side
    2,208x = 11,703,241
  5. Step 5: Solve for x
    x = 11,703,241/2,208
  6. Step 6: Final answer
    x = 5,300.38

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.