Home / 2,211.83-3,052.22-1,217.21

Finding the Fourth Proportional to 2,211.83, 3,052.22 and 1,217.21

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Solution

The fourth proportional to 2,211.83, 3,052.22 and 1,217.21 is: 1,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.83 : 3,052.22 = 1,217.21 : x
  2. Step 2: Convert to fraction form
    2,211.83/3,052.22 = 1,217.21/x
  3. Step 3: Cross multiply
    2,211.83x = 3,052.22 × 1,217.21
  4. Step 4: Simplify right side
    2,211.83x = 3,715,203.38
  5. Step 5: Solve for x
    x = 3,715,203.38/2,211.83
  6. Step 6: Final answer
    x = 1,679.69

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Half scale
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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.