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Finding the Third Proportional to 843.94 and 1,812.19

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Solution

The third proportional to 843.94 and 1,812.19 is: 3,891.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.94 : 1,812.19 = 1,812.19 : x
  2. Step 2: Convert to fraction form
    843.94/1,812.19 = 1,812.19/x
  3. Step 3: Cross multiply
    843.94x = 1,812.19 × 1,812.19
  4. Step 4: Simplify right side
    843.94x = 3,284,023.54
  5. Step 5: Solve for x
    x = 3,284,023.54/843.94
  6. Step 6: Final answer
    x = 3,891.31

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.