Home / 2,778.14-3,836.68-2,382.86

Finding the Fourth Proportional to 2,778.14, 3,836.68 and 2,382.86

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Solution

The fourth proportional to 2,778.14, 3,836.68 and 2,382.86 is: 3,290.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.14 : 3,836.68 = 2,382.86 : x
  2. Step 2: Convert to fraction form
    2,778.14/3,836.68 = 2,382.86/x
  3. Step 3: Cross multiply
    2,778.14x = 3,836.68 × 2,382.86
  4. Step 4: Simplify right side
    2,778.14x = 9,142,271.30
  5. Step 5: Solve for x
    x = 9,142,271.30/2,778.14
  6. Step 6: Final answer
    x = 3,290.79

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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.