Home / 3,879.99-5,354.26-2,201.55

Finding the Fourth Proportional to 3,879.99, 5,354.26 and 2,201.55

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Solution

The fourth proportional to 3,879.99, 5,354.26 and 2,201.55 is: 3,038.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.99 : 5,354.26 = 2,201.55 : x
  2. Step 2: Convert to fraction form
    3,879.99/5,354.26 = 2,201.55/x
  3. Step 3: Cross multiply
    3,879.99x = 5,354.26 × 2,201.55
  4. Step 4: Simplify right side
    3,879.99x = 11,787,671.10
  5. Step 5: Solve for x
    x = 11,787,671.10/3,879.99
  6. Step 6: Final answer
    x = 3,038.07

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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.