Home / 7,190.49-10,791.87-2,811.03

Finding the Fourth Proportional to 7,190.49, 10,791.87 and 2,811.03

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Solution

The fourth proportional to 7,190.49, 10,791.87 and 2,811.03 is: 4,218.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.49 : 10,791.87 = 2,811.03 : x
  2. Step 2: Convert to fraction form
    7,190.49/10,791.87 = 2,811.03/x
  3. Step 3: Cross multiply
    7,190.49x = 10,791.87 × 2,811.03
  4. Step 4: Simplify right side
    7,190.49x = 30,336,270.33
  5. Step 5: Solve for x
    x = 30,336,270.33/7,190.49
  6. Step 6: Final answer
    x = 4,218.94

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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.