Home / 2,183.91-3,258.78-1,921.47

Finding the Fourth Proportional to 2,183.91, 3,258.78 and 1,921.47

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Solution

The fourth proportional to 2,183.91, 3,258.78 and 1,921.47 is: 2,867.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.91 : 3,258.78 = 1,921.47 : x
  2. Step 2: Convert to fraction form
    2,183.91/3,258.78 = 1,921.47/x
  3. Step 3: Cross multiply
    2,183.91x = 3,258.78 × 1,921.47
  4. Step 4: Simplify right side
    2,183.91x = 6,261,648.01
  5. Step 5: Solve for x
    x = 6,261,648.01/2,183.91
  6. Step 6: Final answer
    x = 2,867.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.