Home / 8,131.94-12,195.21-3,200.30

Finding the Fourth Proportional to 8,131.94, 12,195.21 and 3,200.30

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Solution

The fourth proportional to 8,131.94, 12,195.21 and 3,200.30 is: 4,799.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.94 : 12,195.21 = 3,200.30 : x
  2. Step 2: Convert to fraction form
    8,131.94/12,195.21 = 3,200.30/x
  3. Step 3: Cross multiply
    8,131.94x = 12,195.21 × 3,200.30
  4. Step 4: Simplify right side
    8,131.94x = 39,028,330.56
  5. Step 5: Solve for x
    x = 39,028,330.56/8,131.94
  6. Step 6: Final answer
    x = 4,799.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.