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Finding the Third Proportional to 834 and 1,809.25

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Solution

The third proportional to 834 and 1,809.25 is: 3,924.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    834 : 1,809.25 = 1,809.25 : x
  2. Step 2: Convert to fraction form
    834/1,809.25 = 1,809.25/x
  3. Step 3: Cross multiply
    834x = 1,809.25 × 1,809.25
  4. Step 4: Simplify right side
    834x = 3,273,385.56
  5. Step 5: Solve for x
    x = 3,273,385.56/834
  6. Step 6: Final answer
    x = 3,924.92

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.