Home / 2,190.22-3,285.39-1,222.48

Finding the Fourth Proportional to 2,190.22, 3,285.39 and 1,222.48

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Solution

The fourth proportional to 2,190.22, 3,285.39 and 1,222.48 is: 1,833.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.22 : 3,285.39 = 1,222.48 : x
  2. Step 2: Convert to fraction form
    2,190.22/3,285.39 = 1,222.48/x
  3. Step 3: Cross multiply
    2,190.22x = 3,285.39 × 1,222.48
  4. Step 4: Simplify right side
    2,190.22x = 4,016,323.57
  5. Step 5: Solve for x
    x = 4,016,323.57/2,190.22
  6. Step 6: Final answer
    x = 1,833.75

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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.