Home / 2,808.86-3,876.18-1,629.92

Finding the Fourth Proportional to 2,808.86, 3,876.18 and 1,629.92

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Solution

The fourth proportional to 2,808.86, 3,876.18 and 1,629.92 is: 2,249.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.86 : 3,876.18 = 1,629.92 : x
  2. Step 2: Convert to fraction form
    2,808.86/3,876.18 = 1,629.92/x
  3. Step 3: Cross multiply
    2,808.86x = 3,876.18 × 1,629.92
  4. Step 4: Simplify right side
    2,808.86x = 6,317,863.31
  5. Step 5: Solve for x
    x = 6,317,863.31/2,808.86
  6. Step 6: Final answer
    x = 2,249.26

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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.