Home / 2,778.24-3,829.56-2,187.84

Finding the Fourth Proportional to 2,778.24, 3,829.56 and 2,187.84

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Solution

The fourth proportional to 2,778.24, 3,829.56 and 2,187.84 is: 3,015.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.24 : 3,829.56 = 2,187.84 : x
  2. Step 2: Convert to fraction form
    2,778.24/3,829.56 = 2,187.84/x
  3. Step 3: Cross multiply
    2,778.24x = 3,829.56 × 2,187.84
  4. Step 4: Simplify right side
    2,778.24x = 8,378,464.55
  5. Step 5: Solve for x
    x = 8,378,464.55/2,778.24
  6. Step 6: Final answer
    x = 3,015.75

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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.