Home / 3,826.08-5,280.07-2,147.61

Finding the Fourth Proportional to 3,826.08, 5,280.07 and 2,147.61

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Solution

The fourth proportional to 3,826.08, 5,280.07 and 2,147.61 is: 2,963.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.08 : 5,280.07 = 2,147.61 : x
  2. Step 2: Convert to fraction form
    3,826.08/5,280.07 = 2,147.61/x
  3. Step 3: Cross multiply
    3,826.08x = 5,280.07 × 2,147.61
  4. Step 4: Simplify right side
    3,826.08x = 11,339,525.76
  5. Step 5: Solve for x
    x = 11,339,525.76/3,826.08
  6. Step 6: Final answer
    x = 2,963.75

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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.