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Finding the Third Proportional to 3,398.25 and 7,721.25

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Solution

The third proportional to 3,398.25 and 7,721.25 is: 17,543.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.25 : 7,721.25 = 7,721.25 : x
  2. Step 2: Convert to fraction form
    3,398.25/7,721.25 = 7,721.25/x
  3. Step 3: Cross multiply
    3,398.25x = 7,721.25 × 7,721.25
  4. Step 4: Simplify right side
    3,398.25x = 59,617,701.56
  5. Step 5: Solve for x
    x = 59,617,701.56/3,398.25
  6. Step 6: Final answer
    x = 17,543.65

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Why These Related Problems?

These problems maintain the same ratio (2.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.