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Finding the Fourth Proportional to 5,296.70, 7,940.82 and 2,662.80

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Solution

The fourth proportional to 5,296.70, 7,940.82 and 2,662.80 is: 3,992.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,296.70 : 7,940.82 = 2,662.80 : x
  2. Step 2: Convert to fraction form
    5,296.70/7,940.82 = 2,662.80/x
  3. Step 3: Cross multiply
    5,296.70x = 7,940.82 × 2,662.80
  4. Step 4: Simplify right side
    5,296.70x = 21,144,815.50
  5. Step 5: Solve for x
    x = 21,144,815.50/5,296.70
  6. Step 6: Final answer
    x = 3,992.07

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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.