Home / 2,808.90-3,876.01-1,629.86

Finding the Fourth Proportional to 2,808.90, 3,876.01 and 1,629.86

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Solution

The fourth proportional to 2,808.90, 3,876.01 and 1,629.86 is: 2,249.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.90 : 3,876.01 = 1,629.86 : x
  2. Step 2: Convert to fraction form
    2,808.90/3,876.01 = 1,629.86/x
  3. Step 3: Cross multiply
    2,808.90x = 3,876.01 × 1,629.86
  4. Step 4: Simplify right side
    2,808.90x = 6,317,330.20
  5. Step 5: Solve for x
    x = 6,317,330.20/2,808.90
  6. Step 6: Final answer
    x = 2,249.04

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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.