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Finding the Third Proportional to 3,615.75 and 7,719.75

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Solution

The third proportional to 3,615.75 and 7,719.75 is: 16,481.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.75 : 7,719.75 = 7,719.75 : x
  2. Step 2: Convert to fraction form
    3,615.75/7,719.75 = 7,719.75/x
  3. Step 3: Cross multiply
    3,615.75x = 7,719.75 × 7,719.75
  4. Step 4: Simplify right side
    3,615.75x = 59,594,540.06
  5. Step 5: Solve for x
    x = 59,594,540.06/3,615.75
  6. Step 6: Final answer
    x = 16,481.93

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.