Home / 2,223.85-3,069.09-1,279.94

Finding the Fourth Proportional to 2,223.85, 3,069.09 and 1,279.94

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Solution

The fourth proportional to 2,223.85, 3,069.09 and 1,279.94 is: 1,766.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.85 : 3,069.09 = 1,279.94 : x
  2. Step 2: Convert to fraction form
    2,223.85/3,069.09 = 1,279.94/x
  3. Step 3: Cross multiply
    2,223.85x = 3,069.09 × 1,279.94
  4. Step 4: Simplify right side
    2,223.85x = 3,928,251.05
  5. Step 5: Solve for x
    x = 3,928,251.05/2,223.85
  6. Step 6: Final answer
    x = 1,766.42

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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.