Home / 8,119.44-12,179.40-3,190.32

Finding the Fourth Proportional to 8,119.44, 12,179.40 and 3,190.32

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Solution

The fourth proportional to 8,119.44, 12,179.40 and 3,190.32 is: 4,785.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.44 : 12,179.40 = 3,190.32 : x
  2. Step 2: Convert to fraction form
    8,119.44/12,179.40 = 3,190.32/x
  3. Step 3: Cross multiply
    8,119.44x = 12,179.40 × 3,190.32
  4. Step 4: Simplify right side
    8,119.44x = 38,856,183.41
  5. Step 5: Solve for x
    x = 38,856,183.41/8,119.44
  6. Step 6: Final answer
    x = 4,785.57

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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.