Home / 2,221.20-3,065.26-1,226.48

Finding the Fourth Proportional to 2,221.20, 3,065.26 and 1,226.48

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Solution

The fourth proportional to 2,221.20, 3,065.26 and 1,226.48 is: 1,692.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.20 : 3,065.26 = 1,226.48 : x
  2. Step 2: Convert to fraction form
    2,221.20/3,065.26 = 1,226.48/x
  3. Step 3: Cross multiply
    2,221.20x = 3,065.26 × 1,226.48
  4. Step 4: Simplify right side
    2,221.20x = 3,759,480.08
  5. Step 5: Solve for x
    x = 3,759,480.08/2,221.20
  6. Step 6: Final answer
    x = 1,692.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.