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Finding the Third Proportional to 1,243.13 and 1,995.19

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Solution

The third proportional to 1,243.13 and 1,995.19 is: 3,202.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.13 : 1,995.19 = 1,995.19 : x
  2. Step 2: Convert to fraction form
    1,243.13/1,995.19 = 1,995.19/x
  3. Step 3: Cross multiply
    1,243.13x = 1,995.19 × 1,995.19
  4. Step 4: Simplify right side
    1,243.13x = 3,980,773.16
  5. Step 5: Solve for x
    x = 3,980,773.16/1,243.13
  6. Step 6: Final answer
    x = 3,202.23

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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.