Home / 5,375.58-7,418.79-3,138.54

Finding the Fourth Proportional to 5,375.58, 7,418.79 and 3,138.54

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Solution

The fourth proportional to 5,375.58, 7,418.79 and 3,138.54 is: 4,331.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,375.58 : 7,418.79 = 3,138.54 : x
  2. Step 2: Convert to fraction form
    5,375.58/7,418.79 = 3,138.54/x
  3. Step 3: Cross multiply
    5,375.58x = 7,418.79 × 3,138.54
  4. Step 4: Simplify right side
    5,375.58x = 23,284,169.17
  5. Step 5: Solve for x
    x = 23,284,169.17/5,375.58
  6. Step 6: Final answer
    x = 4,331.47

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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.