Home / 5,425.78-8,138.58-1,727.96

Finding the Fourth Proportional to 5,425.78, 8,138.58 and 1,727.96

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Solution

The fourth proportional to 5,425.78, 8,138.58 and 1,727.96 is: 2,591.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.78 : 8,138.58 = 1,727.96 : x
  2. Step 2: Convert to fraction form
    5,425.78/8,138.58 = 1,727.96/x
  3. Step 3: Cross multiply
    5,425.78x = 8,138.58 × 1,727.96
  4. Step 4: Simplify right side
    5,425.78x = 14,063,140.70
  5. Step 5: Solve for x
    x = 14,063,140.70/5,425.78
  6. Step 6: Final answer
    x = 2,591.91

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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.