Home / 3,879.16-5,353.29-2,110.79

Finding the Fourth Proportional to 3,879.16, 5,353.29 and 2,110.79

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Solution

The fourth proportional to 3,879.16, 5,353.29 and 2,110.79 is: 2,912.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.16 : 5,353.29 = 2,110.79 : x
  2. Step 2: Convert to fraction form
    3,879.16/5,353.29 = 2,110.79/x
  3. Step 3: Cross multiply
    3,879.16x = 5,353.29 × 2,110.79
  4. Step 4: Simplify right side
    3,879.16x = 11,299,671.00
  5. Step 5: Solve for x
    x = 11,299,671.00/3,879.16
  6. Step 6: Final answer
    x = 2,912.92

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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.