Home / 2,318.91-3,198.44-1,478.75

Finding the Fourth Proportional to 2,318.91, 3,198.44 and 1,478.75

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Solution

The fourth proportional to 2,318.91, 3,198.44 and 1,478.75 is: 2,039.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.91 : 3,198.44 = 1,478.75 : x
  2. Step 2: Convert to fraction form
    2,318.91/3,198.44 = 1,478.75/x
  3. Step 3: Cross multiply
    2,318.91x = 3,198.44 × 1,478.75
  4. Step 4: Simplify right side
    2,318.91x = 4,729,669.76
  5. Step 5: Solve for x
    x = 4,729,669.76/2,318.91
  6. Step 6: Final answer
    x = 2,039.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.