Home / 3,879.06-5,353.13-2,110.68

Finding the Fourth Proportional to 3,879.06, 5,353.13 and 2,110.68

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Solution

The fourth proportional to 3,879.06, 5,353.13 and 2,110.68 is: 2,912.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.06 : 5,353.13 = 2,110.68 : x
  2. Step 2: Convert to fraction form
    3,879.06/5,353.13 = 2,110.68/x
  3. Step 3: Cross multiply
    3,879.06x = 5,353.13 × 2,110.68
  4. Step 4: Simplify right side
    3,879.06x = 11,298,733.88
  5. Step 5: Solve for x
    x = 11,298,733.88/3,879.06
  6. Step 6: Final answer
    x = 2,912.75

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1.5x scale

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.