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Finding the Fourth Proportional to 7,550.54, 11,321.70 and 2,619.80

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Solution

The fourth proportional to 7,550.54, 11,321.70 and 2,619.80 is: 3,928.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,550.54 : 11,321.70 = 2,619.80 : x
  2. Step 2: Convert to fraction form
    7,550.54/11,321.70 = 2,619.80/x
  3. Step 3: Cross multiply
    7,550.54x = 11,321.70 × 2,619.80
  4. Step 4: Simplify right side
    7,550.54x = 29,660,589.66
  5. Step 5: Solve for x
    x = 29,660,589.66/7,550.54
  6. Step 6: Final answer
    x = 3,928.27

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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.