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Finding the Fourth Proportional to 8,249.40, 12,375.93 and 4,091.67

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Solution

The fourth proportional to 8,249.40, 12,375.93 and 4,091.67 is: 6,138.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,249.40 : 12,375.93 = 4,091.67 : x
  2. Step 2: Convert to fraction form
    8,249.40/12,375.93 = 4,091.67/x
  3. Step 3: Cross multiply
    8,249.40x = 12,375.93 × 4,091.67
  4. Step 4: Simplify right side
    8,249.40x = 50,638,221.50
  5. Step 5: Solve for x
    x = 50,638,221.50/8,249.40
  6. Step 6: Final answer
    x = 6,138.41

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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.