Home / 2,223.20-3,067.88-1,228.48

Finding the Fourth Proportional to 2,223.20, 3,067.88 and 1,228.48

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Solution

The fourth proportional to 2,223.20, 3,067.88 and 1,228.48 is: 1,695.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.20 : 3,067.88 = 1,228.48 : x
  2. Step 2: Convert to fraction form
    2,223.20/3,067.88 = 1,228.48/x
  3. Step 3: Cross multiply
    2,223.20x = 3,067.88 × 1,228.48
  4. Step 4: Simplify right side
    2,223.20x = 3,768,815.41
  5. Step 5: Solve for x
    x = 3,768,815.41/2,223.20
  6. Step 6: Final answer
    x = 1,695.22

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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.