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Finding the Fourth Proportional to 7,863.70, 11,795.30 and 1,940.62

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Solution

The fourth proportional to 7,863.70, 11,795.30 and 1,940.62 is: 2,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.70 : 11,795.30 = 1,940.62 : x
  2. Step 2: Convert to fraction form
    7,863.70/11,795.30 = 1,940.62/x
  3. Step 3: Cross multiply
    7,863.70x = 11,795.30 × 1,940.62
  4. Step 4: Simplify right side
    7,863.70x = 22,890,195.09
  5. Step 5: Solve for x
    x = 22,890,195.09/7,863.70
  6. Step 6: Final answer
    x = 2,910.87

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1.5x scale

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.