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Finding the Fourth Proportional to 2,519.54, 3,778.09 and 764.23

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Solution

The fourth proportional to 2,519.54, 3,778.09 and 764.23 is: 1,145.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.54 : 3,778.09 = 764.23 : x
  2. Step 2: Convert to fraction form
    2,519.54/3,778.09 = 764.23/x
  3. Step 3: Cross multiply
    2,519.54x = 3,778.09 × 764.23
  4. Step 4: Simplify right side
    2,519.54x = 2,887,329.72
  5. Step 5: Solve for x
    x = 2,887,329.72/2,519.54
  6. Step 6: Final answer
    x = 1,145.97

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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.