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Finding the Fourth Proportional to 2,212.33, 3,318.36 and 751.45

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Solution

The fourth proportional to 2,212.33, 3,318.36 and 751.45 is: 1,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.33 : 3,318.36 = 751.45 : x
  2. Step 2: Convert to fraction form
    2,212.33/3,318.36 = 751.45/x
  3. Step 3: Cross multiply
    2,212.33x = 3,318.36 × 751.45
  4. Step 4: Simplify right side
    2,212.33x = 2,493,581.62
  5. Step 5: Solve for x
    x = 2,493,581.62/2,212.33
  6. Step 6: Final answer
    x = 1,127.13

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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.