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Finding the Third Proportional to 1,981.97 and 4,271.48

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Solution

The third proportional to 1,981.97 and 4,271.48 is: 9,205.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.97 : 4,271.48 = 4,271.48 : x
  2. Step 2: Convert to fraction form
    1,981.97/4,271.48 = 4,271.48/x
  3. Step 3: Cross multiply
    1,981.97x = 4,271.48 × 4,271.48
  4. Step 4: Simplify right side
    1,981.97x = 18,245,578.77
  5. Step 5: Solve for x
    x = 18,245,578.77/1,981.97
  6. Step 6: Final answer
    x = 9,205.79

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.