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Finding the Third Proportional to 4,379.88 and 6,615.38

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Solution

The third proportional to 4,379.88 and 6,615.38 is: 9,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,379.88 : 6,615.38 = 6,615.38 : x
  2. Step 2: Convert to fraction form
    4,379.88/6,615.38 = 6,615.38/x
  3. Step 3: Cross multiply
    4,379.88x = 6,615.38 × 6,615.38
  4. Step 4: Simplify right side
    4,379.88x = 43,763,186.39
  5. Step 5: Solve for x
    x = 43,763,186.39/4,379.88
  6. Step 6: Final answer
    x = 9,991.88

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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.