Home / 3,408.30-5,111.68-1,328.36

Finding the Fourth Proportional to 3,408.30, 5,111.68 and 1,328.36

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Solution

The fourth proportional to 3,408.30, 5,111.68 and 1,328.36 is: 1,992.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.30 : 5,111.68 = 1,328.36 : x
  2. Step 2: Convert to fraction form
    3,408.30/5,111.68 = 1,328.36/x
  3. Step 3: Cross multiply
    3,408.30x = 5,111.68 × 1,328.36
  4. Step 4: Simplify right side
    3,408.30x = 6,790,129.01
  5. Step 5: Solve for x
    x = 6,790,129.01/3,408.30
  6. Step 6: Final answer
    x = 1,992.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.