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Finding the Third Proportional to 3,639.38 and 8,007.75

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Solution

The third proportional to 3,639.38 and 8,007.75 is: 17,619.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.38 : 8,007.75 = 8,007.75 : x
  2. Step 2: Convert to fraction form
    3,639.38/8,007.75 = 8,007.75/x
  3. Step 3: Cross multiply
    3,639.38x = 8,007.75 × 8,007.75
  4. Step 4: Simplify right side
    3,639.38x = 64,124,060.06
  5. Step 5: Solve for x
    x = 64,124,060.06/3,639.38
  6. Step 6: Final answer
    x = 17,619.53

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.