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Finding the Fourth Proportional to 7,440.69, 11,161.69 and 2,760.75

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Solution

The fourth proportional to 7,440.69, 11,161.69 and 2,760.75 is: 4,141.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,440.69 : 11,161.69 = 2,760.75 : x
  2. Step 2: Convert to fraction form
    7,440.69/11,161.69 = 2,760.75/x
  3. Step 3: Cross multiply
    7,440.69x = 11,161.69 × 2,760.75
  4. Step 4: Simplify right side
    7,440.69x = 30,814,635.67
  5. Step 5: Solve for x
    x = 30,814,635.67/7,440.69
  6. Step 6: Final answer
    x = 4,141.37

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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.