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Finding the Fourth Proportional to 7,940.62, 11,910.42 and 2,394.15

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Solution

The fourth proportional to 7,940.62, 11,910.42 and 2,394.15 is: 3,591.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.62 : 11,910.42 = 2,394.15 : x
  2. Step 2: Convert to fraction form
    7,940.62/11,910.42 = 2,394.15/x
  3. Step 3: Cross multiply
    7,940.62x = 11,910.42 × 2,394.15
  4. Step 4: Simplify right side
    7,940.62x = 28,515,332.04
  5. Step 5: Solve for x
    x = 28,515,332.04/7,940.62
  6. Step 6: Final answer
    x = 3,591.07

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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.