Home / 3,178.68-4,767.93-1,231.32

Finding the Fourth Proportional to 3,178.68, 4,767.93 and 1,231.32

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Solution

The fourth proportional to 3,178.68, 4,767.93 and 1,231.32 is: 1,846.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.68 : 4,767.93 = 1,231.32 : x
  2. Step 2: Convert to fraction form
    3,178.68/4,767.93 = 1,231.32/x
  3. Step 3: Cross multiply
    3,178.68x = 4,767.93 × 1,231.32
  4. Step 4: Simplify right side
    3,178.68x = 5,870,847.57
  5. Step 5: Solve for x
    x = 5,870,847.57/3,178.68
  6. Step 6: Final answer
    x = 1,846.95

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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.