Home / 2,790.68-4,186.79-2,275.54

Finding the Fourth Proportional to 2,790.68, 4,186.79 and 2,275.54

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Solution

The fourth proportional to 2,790.68, 4,186.79 and 2,275.54 is: 3,413.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.68 : 4,186.79 = 2,275.54 : x
  2. Step 2: Convert to fraction form
    2,790.68/4,186.79 = 2,275.54/x
  3. Step 3: Cross multiply
    2,790.68x = 4,186.79 × 2,275.54
  4. Step 4: Simplify right side
    2,790.68x = 9,527,218.36
  5. Step 5: Solve for x
    x = 9,527,218.36/2,790.68
  6. Step 6: Final answer
    x = 3,413.94

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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.