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Finding the Third Proportional to 2,809 and 4,252.75

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Solution

The third proportional to 2,809 and 4,252.75 is: 6,438.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809 : 4,252.75 = 4,252.75 : x
  2. Step 2: Convert to fraction form
    2,809/4,252.75 = 4,252.75/x
  3. Step 3: Cross multiply
    2,809x = 4,252.75 × 4,252.75
  4. Step 4: Simplify right side
    2,809x = 18,085,882.56
  5. Step 5: Solve for x
    x = 18,085,882.56/2,809
  6. Step 6: Final answer
    x = 6,438.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.