Home / 5,169.76-7,137.69-3,972.61

Finding the Fourth Proportional to 5,169.76, 7,137.69 and 3,972.61

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Solution

The fourth proportional to 5,169.76, 7,137.69 and 3,972.61 is: 5,484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.76 : 7,137.69 = 3,972.61 : x
  2. Step 2: Convert to fraction form
    5,169.76/7,137.69 = 3,972.61/x
  3. Step 3: Cross multiply
    5,169.76x = 7,137.69 × 3,972.61
  4. Step 4: Simplify right side
    5,169.76x = 28,355,252.70
  5. Step 5: Solve for x
    x = 28,355,252.70/5,169.76
  6. Step 6: Final answer
    x = 5,484.83

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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.