Home / 3,906.22-5,390.59-2,137.83

Finding the Fourth Proportional to 3,906.22, 5,390.59 and 2,137.83

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Solution

The fourth proportional to 3,906.22, 5,390.59 and 2,137.83 is: 2,950.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.22 : 5,390.59 = 2,137.83 : x
  2. Step 2: Convert to fraction form
    3,906.22/5,390.59 = 2,137.83/x
  3. Step 3: Cross multiply
    3,906.22x = 5,390.59 × 2,137.83
  4. Step 4: Simplify right side
    3,906.22x = 11,524,159.68
  5. Step 5: Solve for x
    x = 11,524,159.68/3,906.22
  6. Step 6: Final answer
    x = 2,950.21

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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.