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Finding the Third Proportional to 4,272.50 and 5,749

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Solution

The third proportional to 4,272.50 and 5,749 is: 7,735.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,272.50 : 5,749 = 5,749 : x
  2. Step 2: Convert to fraction form
    4,272.50/5,749 = 5,749/x
  3. Step 3: Cross multiply
    4,272.50x = 5,749 × 5,749
  4. Step 4: Simplify right side
    4,272.50x = 33,051,001
  5. Step 5: Solve for x
    x = 33,051,001/4,272.50
  6. Step 6: Final answer
    x = 7,735.75

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.