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Finding the Third Proportional to 990.38 and 2,036.44

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Solution

The third proportional to 990.38 and 2,036.44 is: 4,187.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    990.38 : 2,036.44 = 2,036.44 : x
  2. Step 2: Convert to fraction form
    990.38/2,036.44 = 2,036.44/x
  3. Step 3: Cross multiply
    990.38x = 2,036.44 × 2,036.44
  4. Step 4: Simplify right side
    990.38x = 4,147,077.69
  5. Step 5: Solve for x
    x = 4,147,077.69/990.38
  6. Step 6: Final answer
    x = 4,187.38

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.