Home / 2,201.55-3,300.11-1,380.40

Finding the Fourth Proportional to 2,201.55, 3,300.11 and 1,380.40

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Solution

The fourth proportional to 2,201.55, 3,300.11 and 1,380.40 is: 2,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.55 : 3,300.11 = 1,380.40 : x
  2. Step 2: Convert to fraction form
    2,201.55/3,300.11 = 1,380.40/x
  3. Step 3: Cross multiply
    2,201.55x = 3,300.11 × 1,380.40
  4. Step 4: Simplify right side
    2,201.55x = 4,555,469.07
  5. Step 5: Solve for x
    x = 4,555,469.07/2,201.55
  6. Step 6: Final answer
    x = 2,069.21

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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.