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Finding the Third Proportional to 1,512.38 and 3,431.44

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Solution

The third proportional to 1,512.38 and 3,431.44 is: 7,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.38 : 3,431.44 = 3,431.44 : x
  2. Step 2: Convert to fraction form
    1,512.38/3,431.44 = 3,431.44/x
  3. Step 3: Cross multiply
    1,512.38x = 3,431.44 × 3,431.44
  4. Step 4: Simplify right side
    1,512.38x = 11,774,763.32
  5. Step 5: Solve for x
    x = 11,774,763.32/1,512.38
  6. Step 6: Final answer
    x = 7,785.61

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Why These Related Problems?

These problems maintain the same ratio (2.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.