Home / 8,091.50-12,138.12-3,410.64

Finding the Fourth Proportional to 8,091.50, 12,138.12 and 3,410.64

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Solution

The fourth proportional to 8,091.50, 12,138.12 and 3,410.64 is: 5,116.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.50 : 12,138.12 = 3,410.64 : x
  2. Step 2: Convert to fraction form
    8,091.50/12,138.12 = 3,410.64/x
  3. Step 3: Cross multiply
    8,091.50x = 12,138.12 × 3,410.64
  4. Step 4: Simplify right side
    8,091.50x = 41,398,757.60
  5. Step 5: Solve for x
    x = 41,398,757.60/8,091.50
  6. Step 6: Final answer
    x = 5,116.33

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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.