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Finding the Fourth Proportional to 8,339.90, 12,501.64 and 3,960.42

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Solution

The fourth proportional to 8,339.90, 12,501.64 and 3,960.42 is: 5,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.90 : 12,501.64 = 3,960.42 : x
  2. Step 2: Convert to fraction form
    8,339.90/12,501.64 = 3,960.42/x
  3. Step 3: Cross multiply
    8,339.90x = 12,501.64 × 3,960.42
  4. Step 4: Simplify right side
    8,339.90x = 49,511,745.09
  5. Step 5: Solve for x
    x = 49,511,745.09/8,339.90
  6. Step 6: Final answer
    x = 5,936.73

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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.