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Finding the Third Proportional to 1,728 and 3,173

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Solution

The third proportional to 1,728 and 3,173 is: 5,826.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728 : 3,173 = 3,173 : x
  2. Step 2: Convert to fraction form
    1,728/3,173 = 3,173/x
  3. Step 3: Cross multiply
    1,728x = 3,173 × 3,173
  4. Step 4: Simplify right side
    1,728x = 10,067,929
  5. Step 5: Solve for x
    x = 10,067,929/1,728
  6. Step 6: Final answer
    x = 5,826.35

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.