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Finding the Fourth Proportional to 6,720.55, 10,067.10 and 3,199.90

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Solution

The fourth proportional to 6,720.55, 10,067.10 and 3,199.90 is: 4,793.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.55 : 10,067.10 = 3,199.90 : x
  2. Step 2: Convert to fraction form
    6,720.55/10,067.10 = 3,199.90/x
  3. Step 3: Cross multiply
    6,720.55x = 10,067.10 × 3,199.90
  4. Step 4: Simplify right side
    6,720.55x = 32,213,713.29
  5. Step 5: Solve for x
    x = 32,213,713.29/6,720.55
  6. Step 6: Final answer
    x = 4,793.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.