Home / 2,190.50-3,286.65-1,608.47

Finding the Fourth Proportional to 2,190.50, 3,286.65 and 1,608.47

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Solution

The fourth proportional to 2,190.50, 3,286.65 and 1,608.47 is: 2,413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.50 : 3,286.65 = 1,608.47 : x
  2. Step 2: Convert to fraction form
    2,190.50/3,286.65 = 1,608.47/x
  3. Step 3: Cross multiply
    2,190.50x = 3,286.65 × 1,608.47
  4. Step 4: Simplify right side
    2,190.50x = 5,286,477.93
  5. Step 5: Solve for x
    x = 5,286,477.93/2,190.50
  6. Step 6: Final answer
    x = 2,413.37

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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.