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Finding the Third Proportional to 3,999.38 and 4,287.94

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Solution

The third proportional to 3,999.38 and 4,287.94 is: 4,597.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.38 : 4,287.94 = 4,287.94 : x
  2. Step 2: Convert to fraction form
    3,999.38/4,287.94 = 4,287.94/x
  3. Step 3: Cross multiply
    3,999.38x = 4,287.94 × 4,287.94
  4. Step 4: Simplify right side
    3,999.38x = 18,386,408.00
  5. Step 5: Solve for x
    x = 18,386,408.00/3,999.38
  6. Step 6: Final answer
    x = 4,597.32

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.