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Finding the Third Proportional to 1,917.42 and 3,175.14

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Solution

The third proportional to 1,917.42 and 3,175.14 is: 5,257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.42 : 3,175.14 = 3,175.14 : x
  2. Step 2: Convert to fraction form
    1,917.42/3,175.14 = 3,175.14/x
  3. Step 3: Cross multiply
    1,917.42x = 3,175.14 × 3,175.14
  4. Step 4: Simplify right side
    1,917.42x = 10,081,493.18
  5. Step 5: Solve for x
    x = 10,081,493.18/1,917.42
  6. Step 6: Final answer
    x = 5,257.84

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.