Home / 2,122.32-3,183.39-823.71

Finding the Fourth Proportional to 2,122.32, 3,183.39 and 823.71

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Solution

The fourth proportional to 2,122.32, 3,183.39 and 823.71 is: 1,235.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.32 : 3,183.39 = 823.71 : x
  2. Step 2: Convert to fraction form
    2,122.32/3,183.39 = 823.71/x
  3. Step 3: Cross multiply
    2,122.32x = 3,183.39 × 823.71
  4. Step 4: Simplify right side
    2,122.32x = 2,622,190.18
  5. Step 5: Solve for x
    x = 2,622,190.18/2,122.32
  6. Step 6: Final answer
    x = 1,235.53

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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.