Home / 8,311.82-12,467.72-3,380.33

Finding the Fourth Proportional to 8,311.82, 12,467.72 and 3,380.33

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Solution

The fourth proportional to 8,311.82, 12,467.72 and 3,380.33 is: 5,070.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.82 : 12,467.72 = 3,380.33 : x
  2. Step 2: Convert to fraction form
    8,311.82/12,467.72 = 3,380.33/x
  3. Step 3: Cross multiply
    8,311.82x = 12,467.72 × 3,380.33
  4. Step 4: Simplify right side
    8,311.82x = 42,145,047.57
  5. Step 5: Solve for x
    x = 42,145,047.57/8,311.82
  6. Step 6: Final answer
    x = 5,070.50

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Double scale
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Similar ratio
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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.