Home / 2,811.35-3,879.35-1,632.18

Finding the Fourth Proportional to 2,811.35, 3,879.35 and 1,632.18

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Solution

The fourth proportional to 2,811.35, 3,879.35 and 1,632.18 is: 2,252.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.35 : 3,879.35 = 1,632.18 : x
  2. Step 2: Convert to fraction form
    2,811.35/3,879.35 = 1,632.18/x
  3. Step 3: Cross multiply
    2,811.35x = 3,879.35 × 1,632.18
  4. Step 4: Simplify right side
    2,811.35x = 6,331,789.32
  5. Step 5: Solve for x
    x = 6,331,789.32/2,811.35
  6. Step 6: Final answer
    x = 2,252.23

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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.