Home / 2,112.26-3,169.66-845.58

Finding the Fourth Proportional to 2,112.26, 3,169.66 and 845.58

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Solution

The fourth proportional to 2,112.26, 3,169.66 and 845.58 is: 1,268.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.26 : 3,169.66 = 845.58 : x
  2. Step 2: Convert to fraction form
    2,112.26/3,169.66 = 845.58/x
  3. Step 3: Cross multiply
    2,112.26x = 3,169.66 × 845.58
  4. Step 4: Simplify right side
    2,112.26x = 2,680,212.54
  5. Step 5: Solve for x
    x = 2,680,212.54/2,112.26
  6. Step 6: Final answer
    x = 1,268.88

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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.