Home / 8,168.11-12,249.55-2,620.12

Finding the Fourth Proportional to 8,168.11, 12,249.55 and 2,620.12

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Solution

The fourth proportional to 8,168.11, 12,249.55 and 2,620.12 is: 3,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.11 : 12,249.55 = 2,620.12 : x
  2. Step 2: Convert to fraction form
    8,168.11/12,249.55 = 2,620.12/x
  3. Step 3: Cross multiply
    8,168.11x = 12,249.55 × 2,620.12
  4. Step 4: Simplify right side
    8,168.11x = 32,095,216.60
  5. Step 5: Solve for x
    x = 32,095,216.60/8,168.11
  6. Step 6: Final answer
    x = 3,929.33

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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.