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Finding the Third Proportional to 1,080 and 1,732.22

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Solution

The third proportional to 1,080 and 1,732.22 is: 2,778.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080 : 1,732.22 = 1,732.22 : x
  2. Step 2: Convert to fraction form
    1,080/1,732.22 = 1,732.22/x
  3. Step 3: Cross multiply
    1,080x = 1,732.22 × 1,732.22
  4. Step 4: Simplify right side
    1,080x = 3,000,581.80
  5. Step 5: Solve for x
    x = 3,000,581.80/1,080
  6. Step 6: Final answer
    x = 2,778.32

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.