Home / 3,105.52-4,660.20-2,786.80

Finding the Fourth Proportional to 3,105.52, 4,660.20 and 2,786.80

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Solution

The fourth proportional to 3,105.52, 4,660.20 and 2,786.80 is: 4,181.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.52 : 4,660.20 = 2,786.80 : x
  2. Step 2: Convert to fraction form
    3,105.52/4,660.20 = 2,786.80/x
  3. Step 3: Cross multiply
    3,105.52x = 4,660.20 × 2,786.80
  4. Step 4: Simplify right side
    3,105.52x = 12,987,045.36
  5. Step 5: Solve for x
    x = 12,987,045.36/3,105.52
  6. Step 6: Final answer
    x = 4,181.92

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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.