Home / 8,015.20-12,003.60-3,906.40

Finding the Fourth Proportional to 8,015.20, 12,003.60 and 3,906.40

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Solution

The fourth proportional to 8,015.20, 12,003.60 and 3,906.40 is: 5,850.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,015.20 : 12,003.60 = 3,906.40 : x
  2. Step 2: Convert to fraction form
    8,015.20/12,003.60 = 3,906.40/x
  3. Step 3: Cross multiply
    8,015.20x = 12,003.60 × 3,906.40
  4. Step 4: Simplify right side
    8,015.20x = 46,890,863.04
  5. Step 5: Solve for x
    x = 46,890,863.04/8,015.20
  6. Step 6: Final answer
    x = 5,850.24

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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.