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Finding the Fourth Proportional to 7,262.70, 10,879.65 and 3,969.90

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Solution

The fourth proportional to 7,262.70, 10,879.65 and 3,969.90 is: 5,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,262.70 : 10,879.65 = 3,969.90 : x
  2. Step 2: Convert to fraction form
    7,262.70/10,879.65 = 3,969.90/x
  3. Step 3: Cross multiply
    7,262.70x = 10,879.65 × 3,969.90
  4. Step 4: Simplify right side
    7,262.70x = 43,191,122.54
  5. Step 5: Solve for x
    x = 43,191,122.54/7,262.70
  6. Step 6: Final answer
    x = 5,946.98

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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.