Home / 2,879.28-3,973.32-1,620.41

Finding the Fourth Proportional to 2,879.28, 3,973.32 and 1,620.41

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Solution

The fourth proportional to 2,879.28, 3,973.32 and 1,620.41 is: 2,236.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.28 : 3,973.32 = 1,620.41 : x
  2. Step 2: Convert to fraction form
    2,879.28/3,973.32 = 1,620.41/x
  3. Step 3: Cross multiply
    2,879.28x = 3,973.32 × 1,620.41
  4. Step 4: Simplify right side
    2,879.28x = 6,438,387.59
  5. Step 5: Solve for x
    x = 6,438,387.59/2,879.28
  6. Step 6: Final answer
    x = 2,236.11

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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.