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Finding the Third Proportional to 2,728 and 6,407

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Solution

The third proportional to 2,728 and 6,407 is: 15,047.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728 : 6,407 = 6,407 : x
  2. Step 2: Convert to fraction form
    2,728/6,407 = 6,407/x
  3. Step 3: Cross multiply
    2,728x = 6,407 × 6,407
  4. Step 4: Simplify right side
    2,728x = 41,049,649
  5. Step 5: Solve for x
    x = 41,049,649/2,728
  6. Step 6: Final answer
    x = 15,047.53

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.