Home / 3,826.60-5,280.78-2,255.56

Finding the Fourth Proportional to 3,826.60, 5,280.78 and 2,255.56

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Solution

The fourth proportional to 3,826.60, 5,280.78 and 2,255.56 is: 3,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.60 : 5,280.78 = 2,255.56 : x
  2. Step 2: Convert to fraction form
    3,826.60/5,280.78 = 2,255.56/x
  3. Step 3: Cross multiply
    3,826.60x = 5,280.78 × 2,255.56
  4. Step 4: Simplify right side
    3,826.60x = 11,911,116.14
  5. Step 5: Solve for x
    x = 11,911,116.14/3,826.60
  6. Step 6: Final answer
    x = 3,112.72

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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.