Home / 3,811.24-5,257.78-2,238.64

Finding the Fourth Proportional to 3,811.24, 5,257.78 and 2,238.64

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Solution

The fourth proportional to 3,811.24, 5,257.78 and 2,238.64 is: 3,088.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.24 : 5,257.78 = 2,238.64 : x
  2. Step 2: Convert to fraction form
    3,811.24/5,257.78 = 2,238.64/x
  3. Step 3: Cross multiply
    3,811.24x = 5,257.78 × 2,238.64
  4. Step 4: Simplify right side
    3,811.24x = 11,770,276.62
  5. Step 5: Solve for x
    x = 11,770,276.62/3,811.24
  6. Step 6: Final answer
    x = 3,088.31

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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.