Home / 2,213.96-3,321.70-1,391.27

Finding the Fourth Proportional to 2,213.96, 3,321.70 and 1,391.27

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Solution

The fourth proportional to 2,213.96, 3,321.70 and 1,391.27 is: 2,087.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.96 : 3,321.70 = 1,391.27 : x
  2. Step 2: Convert to fraction form
    2,213.96/3,321.70 = 1,391.27/x
  3. Step 3: Cross multiply
    2,213.96x = 3,321.70 × 1,391.27
  4. Step 4: Simplify right side
    2,213.96x = 4,621,374.60
  5. Step 5: Solve for x
    x = 4,621,374.60/2,213.96
  6. Step 6: Final answer
    x = 2,087.38

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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.