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Finding the Fourth Proportional to 8,245.86, 12,369.94 and 2,699.64

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Solution

The fourth proportional to 8,245.86, 12,369.94 and 2,699.64 is: 4,049.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,245.86 : 12,369.94 = 2,699.64 : x
  2. Step 2: Convert to fraction form
    8,245.86/12,369.94 = 2,699.64/x
  3. Step 3: Cross multiply
    8,245.86x = 12,369.94 × 2,699.64
  4. Step 4: Simplify right side
    8,245.86x = 33,394,309.47
  5. Step 5: Solve for x
    x = 33,394,309.47/8,245.86
  6. Step 6: Final answer
    x = 4,049.83

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1.5x scale

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.