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Finding the Third Proportional to 7,615.13 and 9,309.38

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Solution

The third proportional to 7,615.13 and 9,309.38 is: 11,380.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.13 : 9,309.38 = 9,309.38 : x
  2. Step 2: Convert to fraction form
    7,615.13/9,309.38 = 9,309.38/x
  3. Step 3: Cross multiply
    7,615.13x = 9,309.38 × 9,309.38
  4. Step 4: Simplify right side
    7,615.13x = 86,664,462.89
  5. Step 5: Solve for x
    x = 86,664,462.89/7,615.13
  6. Step 6: Final answer
    x = 11,380.57

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.