Home / 6,920.70-10,363.96-3,951.78

Finding the Fourth Proportional to 6,920.70, 10,363.96 and 3,951.78

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Solution

The fourth proportional to 6,920.70, 10,363.96 and 3,951.78 is: 5,917.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.70 : 10,363.96 = 3,951.78 : x
  2. Step 2: Convert to fraction form
    6,920.70/10,363.96 = 3,951.78/x
  3. Step 3: Cross multiply
    6,920.70x = 10,363.96 × 3,951.78
  4. Step 4: Simplify right side
    6,920.70x = 40,956,089.85
  5. Step 5: Solve for x
    x = 40,956,089.85/6,920.70
  6. Step 6: Final answer
    x = 5,917.91

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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.