Home / 3,809.83-5,257.52-2,131.21

Finding the Fourth Proportional to 3,809.83, 5,257.52 and 2,131.21

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Solution

The fourth proportional to 3,809.83, 5,257.52 and 2,131.21 is: 2,941.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.83 : 5,257.52 = 2,131.21 : x
  2. Step 2: Convert to fraction form
    3,809.83/5,257.52 = 2,131.21/x
  3. Step 3: Cross multiply
    3,809.83x = 5,257.52 × 2,131.21
  4. Step 4: Simplify right side
    3,809.83x = 11,204,879.20
  5. Step 5: Solve for x
    x = 11,204,879.20/3,809.83
  6. Step 6: Final answer
    x = 2,941.04

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Double scale
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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.