Home / 2,212.21-3,318.83-751.37

Finding the Fourth Proportional to 2,212.21, 3,318.83 and 751.37

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Solution

The fourth proportional to 2,212.21, 3,318.83 and 751.37 is: 1,127.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.21 : 3,318.83 = 751.37 : x
  2. Step 2: Convert to fraction form
    2,212.21/3,318.83 = 751.37/x
  3. Step 3: Cross multiply
    2,212.21x = 3,318.83 × 751.37
  4. Step 4: Simplify right side
    2,212.21x = 2,493,652.70
  5. Step 5: Solve for x
    x = 2,493,652.70/2,212.21
  6. Step 6: Final answer
    x = 1,127.22

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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.