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Finding the Third Proportional to 3,879 and 9,055.50

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Solution

The third proportional to 3,879 and 9,055.50 is: 21,140.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879 : 9,055.50 = 9,055.50 : x
  2. Step 2: Convert to fraction form
    3,879/9,055.50 = 9,055.50/x
  3. Step 3: Cross multiply
    3,879x = 9,055.50 × 9,055.50
  4. Step 4: Simplify right side
    3,879x = 82,002,080.25
  5. Step 5: Solve for x
    x = 82,002,080.25/3,879
  6. Step 6: Final answer
    x = 21,140.01

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.