Home / 2,738.20-4,111.35-2,122.60

Finding the Fourth Proportional to 2,738.20, 4,111.35 and 2,122.60

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Solution

The fourth proportional to 2,738.20, 4,111.35 and 2,122.60 is: 3,187.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.20 : 4,111.35 = 2,122.60 : x
  2. Step 2: Convert to fraction form
    2,738.20/4,111.35 = 2,122.60/x
  3. Step 3: Cross multiply
    2,738.20x = 4,111.35 × 2,122.60
  4. Step 4: Simplify right side
    2,738.20x = 8,726,751.51
  5. Step 5: Solve for x
    x = 8,726,751.51/2,738.20
  6. Step 6: Final answer
    x = 3,187.04

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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.