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Finding the Third Proportional to 2,721.75 and 3,618.75

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Solution

The third proportional to 2,721.75 and 3,618.75 is: 4,811.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.75 : 3,618.75 = 3,618.75 : x
  2. Step 2: Convert to fraction form
    2,721.75/3,618.75 = 3,618.75/x
  3. Step 3: Cross multiply
    2,721.75x = 3,618.75 × 3,618.75
  4. Step 4: Simplify right side
    2,721.75x = 13,095,351.56
  5. Step 5: Solve for x
    x = 13,095,351.56/2,721.75
  6. Step 6: Final answer
    x = 4,811.37

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.