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Finding the Third Proportional to 1,682 and 3,415

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Solution

The third proportional to 1,682 and 3,415 is: 6,933.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682 : 3,415 = 3,415 : x
  2. Step 2: Convert to fraction form
    1,682/3,415 = 3,415/x
  3. Step 3: Cross multiply
    1,682x = 3,415 × 3,415
  4. Step 4: Simplify right side
    1,682x = 11,662,225
  5. Step 5: Solve for x
    x = 11,662,225/1,682
  6. Step 6: Final answer
    x = 6,933.55

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.