Home / 3,078.44-4,243.20-2,239.28

Finding the Fourth Proportional to 3,078.44, 4,243.20 and 2,239.28

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Solution

The fourth proportional to 3,078.44, 4,243.20 and 2,239.28 is: 3,086.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.44 : 4,243.20 = 2,239.28 : x
  2. Step 2: Convert to fraction form
    3,078.44/4,243.20 = 2,239.28/x
  3. Step 3: Cross multiply
    3,078.44x = 4,243.20 × 2,239.28
  4. Step 4: Simplify right side
    3,078.44x = 9,501,712.90
  5. Step 5: Solve for x
    x = 9,501,712.90/3,078.44
  6. Step 6: Final answer
    x = 3,086.54

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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.