Home / 4,120.60-6,180.90-3,999.10

Finding the Fourth Proportional to 4,120.60, 6,180.90 and 3,999.10

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Solution

The fourth proportional to 4,120.60, 6,180.90 and 3,999.10 is: 5,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.60 : 6,180.90 = 3,999.10 : x
  2. Step 2: Convert to fraction form
    4,120.60/6,180.90 = 3,999.10/x
  3. Step 3: Cross multiply
    4,120.60x = 6,180.90 × 3,999.10
  4. Step 4: Simplify right side
    4,120.60x = 24,718,037.19
  5. Step 5: Solve for x
    x = 24,718,037.19/4,120.60
  6. Step 6: Final answer
    x = 5,998.65

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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.