Home / 2,811.16-4,218.42-1,081.24

Finding the Fourth Proportional to 2,811.16, 4,218.42 and 1,081.24

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Solution

The fourth proportional to 2,811.16, 4,218.42 and 1,081.24 is: 1,622.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.16 : 4,218.42 = 1,081.24 : x
  2. Step 2: Convert to fraction form
    2,811.16/4,218.42 = 1,081.24/x
  3. Step 3: Cross multiply
    2,811.16x = 4,218.42 × 1,081.24
  4. Step 4: Simplify right side
    2,811.16x = 4,561,124.44
  5. Step 5: Solve for x
    x = 4,561,124.44/2,811.16
  6. Step 6: Final answer
    x = 1,622.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.