Home / 4,879.78-7,321.38-2,539.66

Finding the Fourth Proportional to 4,879.78, 7,321.38 and 2,539.66

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Solution

The fourth proportional to 4,879.78, 7,321.38 and 2,539.66 is: 3,810.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.78 : 7,321.38 = 2,539.66 : x
  2. Step 2: Convert to fraction form
    4,879.78/7,321.38 = 2,539.66/x
  3. Step 3: Cross multiply
    4,879.78x = 7,321.38 × 2,539.66
  4. Step 4: Simplify right side
    4,879.78x = 18,593,815.93
  5. Step 5: Solve for x
    x = 18,593,815.93/4,879.78
  6. Step 6: Final answer
    x = 3,810.38

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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.