Home / 3,809.88-5,257.52-2,131.43

Finding the Fourth Proportional to 3,809.88, 5,257.52 and 2,131.43

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Solution

The fourth proportional to 3,809.88, 5,257.52 and 2,131.43 is: 2,941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.88 : 5,257.52 = 2,131.43 : x
  2. Step 2: Convert to fraction form
    3,809.88/5,257.52 = 2,131.43/x
  3. Step 3: Cross multiply
    3,809.88x = 5,257.52 × 2,131.43
  4. Step 4: Simplify right side
    3,809.88x = 11,205,998.91
  5. Step 5: Solve for x
    x = 11,205,998.91/3,809.88
  6. Step 6: Final answer
    x = 2,941.30

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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.