Home / 3,960.24-5,464.92-2,191.80

Finding the Fourth Proportional to 3,960.24, 5,464.92 and 2,191.80

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Solution

The fourth proportional to 3,960.24, 5,464.92 and 2,191.80 is: 3,024.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.24 : 5,464.92 = 2,191.80 : x
  2. Step 2: Convert to fraction form
    3,960.24/5,464.92 = 2,191.80/x
  3. Step 3: Cross multiply
    3,960.24x = 5,464.92 × 2,191.80
  4. Step 4: Simplify right side
    3,960.24x = 11,978,011.66
  5. Step 5: Solve for x
    x = 11,978,011.66/3,960.24
  6. Step 6: Final answer
    x = 3,024.57

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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.