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Finding the Fourth Proportional to 5,190.73, 7,161.02 and 3,619.73

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Solution

The fourth proportional to 5,190.73, 7,161.02 and 3,619.73 is: 4,993.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.73 : 7,161.02 = 3,619.73 : x
  2. Step 2: Convert to fraction form
    5,190.73/7,161.02 = 3,619.73/x
  3. Step 3: Cross multiply
    5,190.73x = 7,161.02 × 3,619.73
  4. Step 4: Simplify right side
    5,190.73x = 25,920,958.92
  5. Step 5: Solve for x
    x = 25,920,958.92/5,190.73
  6. Step 6: Final answer
    x = 4,993.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.