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Finding the Fourth Proportional to 2,879.46, 3,974.54 and 1,803.31

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Solution

The fourth proportional to 2,879.46, 3,974.54 and 1,803.31 is: 2,489.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.46 : 3,974.54 = 1,803.31 : x
  2. Step 2: Convert to fraction form
    2,879.46/3,974.54 = 1,803.31/x
  3. Step 3: Cross multiply
    2,879.46x = 3,974.54 × 1,803.31
  4. Step 4: Simplify right side
    2,879.46x = 7,167,308.77
  5. Step 5: Solve for x
    x = 7,167,308.77/2,879.46
  6. Step 6: Final answer
    x = 2,489.12

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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.