Home / 2,811.05-3,879.19-1,552.11

Finding the Fourth Proportional to 2,811.05, 3,879.19 and 1,552.11

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Solution

The fourth proportional to 2,811.05, 3,879.19 and 1,552.11 is: 2,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.05 : 3,879.19 = 1,552.11 : x
  2. Step 2: Convert to fraction form
    2,811.05/3,879.19 = 1,552.11/x
  3. Step 3: Cross multiply
    2,811.05x = 3,879.19 × 1,552.11
  4. Step 4: Simplify right side
    2,811.05x = 6,020,938.80
  5. Step 5: Solve for x
    x = 6,020,938.80/2,811.05
  6. Step 6: Final answer
    x = 2,141.88

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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.