Home / 4,272.76-6,408.24-1,639.42

Finding the Fourth Proportional to 4,272.76, 6,408.24 and 1,639.42

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Solution

The fourth proportional to 4,272.76, 6,408.24 and 1,639.42 is: 2,458.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,272.76 : 6,408.24 = 1,639.42 : x
  2. Step 2: Convert to fraction form
    4,272.76/6,408.24 = 1,639.42/x
  3. Step 3: Cross multiply
    4,272.76x = 6,408.24 × 1,639.42
  4. Step 4: Simplify right side
    4,272.76x = 10,505,796.82
  5. Step 5: Solve for x
    x = 10,505,796.82/4,272.76
  6. Step 6: Final answer
    x = 2,458.78

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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.