Home / 3,109.62-4,286.98-2,223.88

Finding the Fourth Proportional to 3,109.62, 4,286.98 and 2,223.88

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Solution

The fourth proportional to 3,109.62, 4,286.98 and 2,223.88 is: 3,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.62 : 4,286.98 = 2,223.88 : x
  2. Step 2: Convert to fraction form
    3,109.62/4,286.98 = 2,223.88/x
  3. Step 3: Cross multiply
    3,109.62x = 4,286.98 × 2,223.88
  4. Step 4: Simplify right side
    3,109.62x = 9,533,729.08
  5. Step 5: Solve for x
    x = 9,533,729.08/3,109.62
  6. Step 6: Final answer
    x = 3,065.88

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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.