Home / 3,178.40-4,766.46-1,231.28

Finding the Fourth Proportional to 3,178.40, 4,766.46 and 1,231.28

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Solution

The fourth proportional to 3,178.40, 4,766.46 and 1,231.28 is: 1,846.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.40 : 4,766.46 = 1,231.28 : x
  2. Step 2: Convert to fraction form
    3,178.40/4,766.46 = 1,231.28/x
  3. Step 3: Cross multiply
    3,178.40x = 4,766.46 × 1,231.28
  4. Step 4: Simplify right side
    3,178.40x = 5,868,846.87
  5. Step 5: Solve for x
    x = 5,868,846.87/3,178.40
  6. Step 6: Final answer
    x = 1,846.48

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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.