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Finding the Fourth Proportional to 8,119.58, 12,181.84 and 3,958.98

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Solution

The fourth proportional to 8,119.58, 12,181.84 and 3,958.98 is: 5,939.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.58 : 12,181.84 = 3,958.98 : x
  2. Step 2: Convert to fraction form
    8,119.58/12,181.84 = 3,958.98/x
  3. Step 3: Cross multiply
    8,119.58x = 12,181.84 × 3,958.98
  4. Step 4: Simplify right side
    8,119.58x = 48,227,660.92
  5. Step 5: Solve for x
    x = 48,227,660.92/8,119.58
  6. Step 6: Final answer
    x = 5,939.67

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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.