Home / 1,231.32-1,847.18-409.41

Finding the Fourth Proportional to 1,231.32, 1,847.18 and 409.41

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Solution

The fourth proportional to 1,231.32, 1,847.18 and 409.41 is: 614.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.32 : 1,847.18 = 409.41 : x
  2. Step 2: Convert to fraction form
    1,231.32/1,847.18 = 409.41/x
  3. Step 3: Cross multiply
    1,231.32x = 1,847.18 × 409.41
  4. Step 4: Simplify right side
    1,231.32x = 756,251.92
  5. Step 5: Solve for x
    x = 756,251.92/1,231.32
  6. Step 6: Final answer
    x = 614.18

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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.