Home / 3,178.70-4,768.86-1,230.38

Finding the Fourth Proportional to 3,178.70, 4,768.86 and 1,230.38

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Solution

The fourth proportional to 3,178.70, 4,768.86 and 1,230.38 is: 1,845.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.70 : 4,768.86 = 1,230.38 : x
  2. Step 2: Convert to fraction form
    3,178.70/4,768.86 = 1,230.38/x
  3. Step 3: Cross multiply
    3,178.70x = 4,768.86 × 1,230.38
  4. Step 4: Simplify right side
    3,178.70x = 5,867,509.97
  5. Step 5: Solve for x
    x = 5,867,509.97/3,178.70
  6. Step 6: Final answer
    x = 1,845.88

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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.