Home / 3,156.96-4,355.68-2,108

Finding the Fourth Proportional to 3,156.96, 4,355.68 and 2,108

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Solution

The fourth proportional to 3,156.96, 4,355.68 and 2,108 is: 2,908.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.96 : 4,355.68 = 2,108 : x
  2. Step 2: Convert to fraction form
    3,156.96/4,355.68 = 2,108/x
  3. Step 3: Cross multiply
    3,156.96x = 4,355.68 × 2,108
  4. Step 4: Simplify right side
    3,156.96x = 9,181,773.44
  5. Step 5: Solve for x
    x = 9,181,773.44/3,156.96
  6. Step 6: Final answer
    x = 2,908.42

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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.