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Finding the Third Proportional to 816 and 1,793.63

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Solution

The third proportional to 816 and 1,793.63 is: 3,942.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    816 : 1,793.63 = 1,793.63 : x
  2. Step 2: Convert to fraction form
    816/1,793.63 = 1,793.63/x
  3. Step 3: Cross multiply
    816x = 1,793.63 × 1,793.63
  4. Step 4: Simplify right side
    816x = 3,217,090.64
  5. Step 5: Solve for x
    x = 3,217,090.64/816
  6. Step 6: Final answer
    x = 3,942.51

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.