Home / 3,959.42-5,464.26-2,280.78

Finding the Fourth Proportional to 3,959.42, 5,464.26 and 2,280.78

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Solution

The fourth proportional to 3,959.42, 5,464.26 and 2,280.78 is: 3,147.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.42 : 5,464.26 = 2,280.78 : x
  2. Step 2: Convert to fraction form
    3,959.42/5,464.26 = 2,280.78/x
  3. Step 3: Cross multiply
    3,959.42x = 5,464.26 × 2,280.78
  4. Step 4: Simplify right side
    3,959.42x = 12,462,774.92
  5. Step 5: Solve for x
    x = 12,462,774.92/3,959.42
  6. Step 6: Final answer
    x = 3,147.63

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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.