Home / 3,178.14-4,765.38-2,661.36

Finding the Fourth Proportional to 3,178.14, 4,765.38 and 2,661.36

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Solution

The fourth proportional to 3,178.14, 4,765.38 and 2,661.36 is: 3,990.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.14 : 4,765.38 = 2,661.36 : x
  2. Step 2: Convert to fraction form
    3,178.14/4,765.38 = 2,661.36/x
  3. Step 3: Cross multiply
    3,178.14x = 4,765.38 × 2,661.36
  4. Step 4: Simplify right side
    3,178.14x = 12,682,391.72
  5. Step 5: Solve for x
    x = 12,682,391.72/3,178.14
  6. Step 6: Final answer
    x = 3,990.51

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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.