Home / 2,217.80-3,326.70-1,399.70

Finding the Fourth Proportional to 2,217.80, 3,326.70 and 1,399.70

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Solution

The fourth proportional to 2,217.80, 3,326.70 and 1,399.70 is: 2,099.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.80 : 3,326.70 = 1,399.70 : x
  2. Step 2: Convert to fraction form
    2,217.80/3,326.70 = 1,399.70/x
  3. Step 3: Cross multiply
    2,217.80x = 3,326.70 × 1,399.70
  4. Step 4: Simplify right side
    2,217.80x = 4,656,381.99
  5. Step 5: Solve for x
    x = 4,656,381.99/2,217.80
  6. Step 6: Final answer
    x = 2,099.55

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Similar ratio
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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.