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Finding the Third Proportional to 2,721.75 and 5,679.75

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Solution

The third proportional to 2,721.75 and 5,679.75 is: 11,852.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.75 : 5,679.75 = 5,679.75 : x
  2. Step 2: Convert to fraction form
    2,721.75/5,679.75 = 5,679.75/x
  3. Step 3: Cross multiply
    2,721.75x = 5,679.75 × 5,679.75
  4. Step 4: Simplify right side
    2,721.75x = 32,259,560.06
  5. Step 5: Solve for x
    x = 32,259,560.06/2,721.75
  6. Step 6: Final answer
    x = 11,852.51

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.