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Finding the Third Proportional to 1,115.16 and 1,675.97

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Solution

The third proportional to 1,115.16 and 1,675.97 is: 2,518.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.16 : 1,675.97 = 1,675.97 : x
  2. Step 2: Convert to fraction form
    1,115.16/1,675.97 = 1,675.97/x
  3. Step 3: Cross multiply
    1,115.16x = 1,675.97 × 1,675.97
  4. Step 4: Simplify right side
    1,115.16x = 2,808,871.25
  5. Step 5: Solve for x
    x = 2,808,871.25/1,115.16
  6. Step 6: Final answer
    x = 2,518.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.