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Finding the Third Proportional to 1,831.25 and 4,072.75

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Solution

The third proportional to 1,831.25 and 4,072.75 is: 9,057.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.25 : 4,072.75 = 4,072.75 : x
  2. Step 2: Convert to fraction form
    1,831.25/4,072.75 = 4,072.75/x
  3. Step 3: Cross multiply
    1,831.25x = 4,072.75 × 4,072.75
  4. Step 4: Simplify right side
    1,831.25x = 16,587,292.56
  5. Step 5: Solve for x
    x = 16,587,292.56/1,831.25
  6. Step 6: Final answer
    x = 9,057.91

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.