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Finding the Third Proportional to 1,954.13 and 3,987.84

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Solution

The third proportional to 1,954.13 and 3,987.84 is: 8,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.13 : 3,987.84 = 3,987.84 : x
  2. Step 2: Convert to fraction form
    1,954.13/3,987.84 = 3,987.84/x
  3. Step 3: Cross multiply
    1,954.13x = 3,987.84 × 3,987.84
  4. Step 4: Simplify right side
    1,954.13x = 15,902,897.77
  5. Step 5: Solve for x
    x = 15,902,897.77/1,954.13
  6. Step 6: Final answer
    x = 8,138.12

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.