Home / 3,105.99-4,286.25-1,779.66

Finding the Fourth Proportional to 3,105.99, 4,286.25 and 1,779.66

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Solution

The fourth proportional to 3,105.99, 4,286.25 and 1,779.66 is: 2,455.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.99 : 4,286.25 = 1,779.66 : x
  2. Step 2: Convert to fraction form
    3,105.99/4,286.25 = 1,779.66/x
  3. Step 3: Cross multiply
    3,105.99x = 4,286.25 × 1,779.66
  4. Step 4: Simplify right side
    3,105.99x = 7,628,067.68
  5. Step 5: Solve for x
    x = 7,628,067.68/3,105.99
  6. Step 6: Final answer
    x = 2,455.92

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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.