Home / 3,959.54-5,464.40-2,280.90

Finding the Fourth Proportional to 3,959.54, 5,464.40 and 2,280.90

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Solution

The fourth proportional to 3,959.54, 5,464.40 and 2,280.90 is: 3,147.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.54 : 5,464.40 = 2,280.90 : x
  2. Step 2: Convert to fraction form
    3,959.54/5,464.40 = 2,280.90/x
  3. Step 3: Cross multiply
    3,959.54x = 5,464.40 × 2,280.90
  4. Step 4: Simplify right side
    3,959.54x = 12,463,738.56
  5. Step 5: Solve for x
    x = 12,463,738.56/3,959.54
  6. Step 6: Final answer
    x = 3,147.78

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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.