Home / 3,408.76-5,111.82-1,328.48

Finding the Fourth Proportional to 3,408.76, 5,111.82 and 1,328.48

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Solution

The fourth proportional to 3,408.76, 5,111.82 and 1,328.48 is: 1,992.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.76 : 5,111.82 = 1,328.48 : x
  2. Step 2: Convert to fraction form
    3,408.76/5,111.82 = 1,328.48/x
  3. Step 3: Cross multiply
    3,408.76x = 5,111.82 × 1,328.48
  4. Step 4: Simplify right side
    3,408.76x = 6,790,950.63
  5. Step 5: Solve for x
    x = 6,790,950.63/3,408.76
  6. Step 6: Final answer
    x = 1,992.21

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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.