Home / 3,826.50-5,280.78-2,255.10

Finding the Fourth Proportional to 3,826.50, 5,280.78 and 2,255.10

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Solution

The fourth proportional to 3,826.50, 5,280.78 and 2,255.10 is: 3,112.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.50 : 5,280.78 = 2,255.10 : x
  2. Step 2: Convert to fraction form
    3,826.50/5,280.78 = 2,255.10/x
  3. Step 3: Cross multiply
    3,826.50x = 5,280.78 × 2,255.10
  4. Step 4: Simplify right side
    3,826.50x = 11,908,686.98
  5. Step 5: Solve for x
    x = 11,908,686.98/3,826.50
  6. Step 6: Final answer
    x = 3,112.16

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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.