Home / 3,917.24-5,406.17-2,238.78

Finding the Fourth Proportional to 3,917.24, 5,406.17 and 2,238.78

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Solution

The fourth proportional to 3,917.24, 5,406.17 and 2,238.78 is: 3,089.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.24 : 5,406.17 = 2,238.78 : x
  2. Step 2: Convert to fraction form
    3,917.24/5,406.17 = 2,238.78/x
  3. Step 3: Cross multiply
    3,917.24x = 5,406.17 × 2,238.78
  4. Step 4: Simplify right side
    3,917.24x = 12,103,214.08
  5. Step 5: Solve for x
    x = 12,103,214.08/3,917.24
  6. Step 6: Final answer
    x = 3,089.73

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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.