Home / 3,879.24-5,353.47-2,110.74

Finding the Fourth Proportional to 3,879.24, 5,353.47 and 2,110.74

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Solution

The fourth proportional to 3,879.24, 5,353.47 and 2,110.74 is: 2,912.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.24 : 5,353.47 = 2,110.74 : x
  2. Step 2: Convert to fraction form
    3,879.24/5,353.47 = 2,110.74/x
  3. Step 3: Cross multiply
    3,879.24x = 5,353.47 × 2,110.74
  4. Step 4: Simplify right side
    3,879.24x = 11,299,783.27
  5. Step 5: Solve for x
    x = 11,299,783.27/3,879.24
  6. Step 6: Final answer
    x = 2,912.89

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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.