Home / 7,940.20-11,906.46-4,654.36

Finding the Fourth Proportional to 7,940.20, 11,906.46 and 4,654.36

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Solution

The fourth proportional to 7,940.20, 11,906.46 and 4,654.36 is: 6,979.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.20 : 11,906.46 = 4,654.36 : x
  2. Step 2: Convert to fraction form
    7,940.20/11,906.46 = 4,654.36/x
  3. Step 3: Cross multiply
    7,940.20x = 11,906.46 × 4,654.36
  4. Step 4: Simplify right side
    7,940.20x = 55,416,951.17
  5. Step 5: Solve for x
    x = 55,416,951.17/7,940.20
  6. Step 6: Final answer
    x = 6,979.29

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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.