Home / 3,479.25-5,218.78-1,288.41

Finding the Fourth Proportional to 3,479.25, 5,218.78 and 1,288.41

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Solution

The fourth proportional to 3,479.25, 5,218.78 and 1,288.41 is: 1,932.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.25 : 5,218.78 = 1,288.41 : x
  2. Step 2: Convert to fraction form
    3,479.25/5,218.78 = 1,288.41/x
  3. Step 3: Cross multiply
    3,479.25x = 5,218.78 × 1,288.41
  4. Step 4: Simplify right side
    3,479.25x = 6,723,907.96
  5. Step 5: Solve for x
    x = 6,723,907.96/3,479.25
  6. Step 6: Final answer
    x = 1,932.57

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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.