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Finding the Third Proportional to 811.97 and 1,779.19

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Solution

The third proportional to 811.97 and 1,779.19 is: 3,898.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    811.97 : 1,779.19 = 1,779.19 : x
  2. Step 2: Convert to fraction form
    811.97/1,779.19 = 1,779.19/x
  3. Step 3: Cross multiply
    811.97x = 1,779.19 × 1,779.19
  4. Step 4: Simplify right side
    811.97x = 3,165,508.16
  5. Step 5: Solve for x
    x = 3,165,508.16/811.97
  6. Step 6: Final answer
    x = 3,898.56

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.