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Finding the Third Proportional to 1,985.25 and 3,148.38

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Solution

The third proportional to 1,985.25 and 3,148.38 is: 4,992.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.25 : 3,148.38 = 3,148.38 : x
  2. Step 2: Convert to fraction form
    1,985.25/3,148.38 = 3,148.38/x
  3. Step 3: Cross multiply
    1,985.25x = 3,148.38 × 3,148.38
  4. Step 4: Simplify right side
    1,985.25x = 9,912,265.14
  5. Step 5: Solve for x
    x = 9,912,265.14/1,985.25
  6. Step 6: Final answer
    x = 4,992.96

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.