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Finding the Third Proportional to 3,255 and 4,189.50

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Solution

The third proportional to 3,255 and 4,189.50 is: 5,392.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,255 : 4,189.50 = 4,189.50 : x
  2. Step 2: Convert to fraction form
    3,255/4,189.50 = 4,189.50/x
  3. Step 3: Cross multiply
    3,255x = 4,189.50 × 4,189.50
  4. Step 4: Simplify right side
    3,255x = 17,551,910.25
  5. Step 5: Solve for x
    x = 17,551,910.25/3,255
  6. Step 6: Final answer
    x = 5,392.29

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.