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Finding the Fourth Proportional to 6,679.86, 10,013.12 and 3,163.64

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Solution

The fourth proportional to 6,679.86, 10,013.12 and 3,163.64 is: 4,742.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,679.86 : 10,013.12 = 3,163.64 : x
  2. Step 2: Convert to fraction form
    6,679.86/10,013.12 = 3,163.64/x
  3. Step 3: Cross multiply
    6,679.86x = 10,013.12 × 3,163.64
  4. Step 4: Simplify right side
    6,679.86x = 31,677,906.96
  5. Step 5: Solve for x
    x = 31,677,906.96/6,679.86
  6. Step 6: Final answer
    x = 4,742.30

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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.