Home / 5,418.30-8,128.05-2,956.71

Finding the Fourth Proportional to 5,418.30, 8,128.05 and 2,956.71

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Solution

The fourth proportional to 5,418.30, 8,128.05 and 2,956.71 is: 4,435.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.30 : 8,128.05 = 2,956.71 : x
  2. Step 2: Convert to fraction form
    5,418.30/8,128.05 = 2,956.71/x
  3. Step 3: Cross multiply
    5,418.30x = 8,128.05 × 2,956.71
  4. Step 4: Simplify right side
    5,418.30x = 24,032,286.72
  5. Step 5: Solve for x
    x = 24,032,286.72/5,418.30
  6. Step 6: Final answer
    x = 4,435.39

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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.