Home / 8,122.80-12,185.68-3,194.80

Finding the Fourth Proportional to 8,122.80, 12,185.68 and 3,194.80

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Solution

The fourth proportional to 8,122.80, 12,185.68 and 3,194.80 is: 4,792.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.80 : 12,185.68 = 3,194.80 : x
  2. Step 2: Convert to fraction form
    8,122.80/12,185.68 = 3,194.80/x
  3. Step 3: Cross multiply
    8,122.80x = 12,185.68 × 3,194.80
  4. Step 4: Simplify right side
    8,122.80x = 38,930,810.46
  5. Step 5: Solve for x
    x = 38,930,810.46/8,122.80
  6. Step 6: Final answer
    x = 4,792.78

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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.