Home / 8,078.75-11,149.55-4,722.69

Finding the Fourth Proportional to 8,078.75, 11,149.55 and 4,722.69

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Solution

The fourth proportional to 8,078.75, 11,149.55 and 4,722.69 is: 6,517.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.75 : 11,149.55 = 4,722.69 : x
  2. Step 2: Convert to fraction form
    8,078.75/11,149.55 = 4,722.69/x
  3. Step 3: Cross multiply
    8,078.75x = 11,149.55 × 4,722.69
  4. Step 4: Simplify right side
    8,078.75x = 52,655,844.68
  5. Step 5: Solve for x
    x = 52,655,844.68/8,078.75
  6. Step 6: Final answer
    x = 6,517.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.