Home / 3,480.12-5,222.22-1,399.80

Finding the Fourth Proportional to 3,480.12, 5,222.22 and 1,399.80

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Solution

The fourth proportional to 3,480.12, 5,222.22 and 1,399.80 is: 2,100.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.12 : 5,222.22 = 1,399.80 : x
  2. Step 2: Convert to fraction form
    3,480.12/5,222.22 = 1,399.80/x
  3. Step 3: Cross multiply
    3,480.12x = 5,222.22 × 1,399.80
  4. Step 4: Simplify right side
    3,480.12x = 7,310,063.56
  5. Step 5: Solve for x
    x = 7,310,063.56/3,480.12
  6. Step 6: Final answer
    x = 2,100.52

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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.