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Finding the Third Proportional to 3,999.75 and 4,728.75

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Solution

The third proportional to 3,999.75 and 4,728.75 is: 5,590.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.75 : 4,728.75 = 4,728.75 : x
  2. Step 2: Convert to fraction form
    3,999.75/4,728.75 = 4,728.75/x
  3. Step 3: Cross multiply
    3,999.75x = 4,728.75 × 4,728.75
  4. Step 4: Simplify right side
    3,999.75x = 22,361,076.56
  5. Step 5: Solve for x
    x = 22,361,076.56/3,999.75
  6. Step 6: Final answer
    x = 5,590.62

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.