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Finding the Third Proportional to 1,388.81 and 1,801.97

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Solution

The third proportional to 1,388.81 and 1,801.97 is: 2,338.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.81 : 1,801.97 = 1,801.97 : x
  2. Step 2: Convert to fraction form
    1,388.81/1,801.97 = 1,801.97/x
  3. Step 3: Cross multiply
    1,388.81x = 1,801.97 × 1,801.97
  4. Step 4: Simplify right side
    1,388.81x = 3,247,091.38
  5. Step 5: Solve for x
    x = 3,247,091.38/1,388.81
  6. Step 6: Final answer
    x = 2,338.03

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.