Home / 3,178.36-4,768.47-1,422.97

Finding the Fourth Proportional to 3,178.36, 4,768.47 and 1,422.97

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Solution

The fourth proportional to 3,178.36, 4,768.47 and 1,422.97 is: 2,134.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.36 : 4,768.47 = 1,422.97 : x
  2. Step 2: Convert to fraction form
    3,178.36/4,768.47 = 1,422.97/x
  3. Step 3: Cross multiply
    3,178.36x = 4,768.47 × 1,422.97
  4. Step 4: Simplify right side
    3,178.36x = 6,785,395.72
  5. Step 5: Solve for x
    x = 6,785,395.72/3,178.36
  6. Step 6: Final answer
    x = 2,134.87

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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.