Home / 2,811.72-3,879.84-1,632.60

Finding the Fourth Proportional to 2,811.72, 3,879.84 and 1,632.60

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Solution

The fourth proportional to 2,811.72, 3,879.84 and 1,632.60 is: 2,252.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.72 : 3,879.84 = 1,632.60 : x
  2. Step 2: Convert to fraction form
    2,811.72/3,879.84 = 1,632.60/x
  3. Step 3: Cross multiply
    2,811.72x = 3,879.84 × 1,632.60
  4. Step 4: Simplify right side
    2,811.72x = 6,334,226.78
  5. Step 5: Solve for x
    x = 6,334,226.78/2,811.72
  6. Step 6: Final answer
    x = 2,252.79

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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.