Home / 3,879.37-5,351.80-2,620.02

Finding the Fourth Proportional to 3,879.37, 5,351.80 and 2,620.02

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Solution

The fourth proportional to 3,879.37, 5,351.80 and 2,620.02 is: 3,614.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.37 : 5,351.80 = 2,620.02 : x
  2. Step 2: Convert to fraction form
    3,879.37/5,351.80 = 2,620.02/x
  3. Step 3: Cross multiply
    3,879.37x = 5,351.80 × 2,620.02
  4. Step 4: Simplify right side
    3,879.37x = 14,021,823.04
  5. Step 5: Solve for x
    x = 14,021,823.04/3,879.37
  6. Step 6: Final answer
    x = 3,614.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.