Home / 3,896.88-5,378.97-2,778.27

Finding the Fourth Proportional to 3,896.88, 5,378.97 and 2,778.27

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Solution

The fourth proportional to 3,896.88, 5,378.97 and 2,778.27 is: 3,834.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.88 : 5,378.97 = 2,778.27 : x
  2. Step 2: Convert to fraction form
    3,896.88/5,378.97 = 2,778.27/x
  3. Step 3: Cross multiply
    3,896.88x = 5,378.97 × 2,778.27
  4. Step 4: Simplify right side
    3,896.88x = 14,944,230.98
  5. Step 5: Solve for x
    x = 14,944,230.98/3,896.88
  6. Step 6: Final answer
    x = 3,834.92

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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.