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Finding the Third Proportional to 3,320 and 6,730

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Solution

The third proportional to 3,320 and 6,730 is: 13,642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320 : 6,730 = 6,730 : x
  2. Step 2: Convert to fraction form
    3,320/6,730 = 6,730/x
  3. Step 3: Cross multiply
    3,320x = 6,730 × 6,730
  4. Step 4: Simplify right side
    3,320x = 45,292,900
  5. Step 5: Solve for x
    x = 45,292,900/3,320
  6. Step 6: Final answer
    x = 13,642.44

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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.