Home / 2,108.45-3,165.53-1,231.85

Finding the Fourth Proportional to 2,108.45, 3,165.53 and 1,231.85

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Solution

The fourth proportional to 2,108.45, 3,165.53 and 1,231.85 is: 1,849.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.45 : 3,165.53 = 1,231.85 : x
  2. Step 2: Convert to fraction form
    2,108.45/3,165.53 = 1,231.85/x
  3. Step 3: Cross multiply
    2,108.45x = 3,165.53 × 1,231.85
  4. Step 4: Simplify right side
    2,108.45x = 3,899,436.14
  5. Step 5: Solve for x
    x = 3,899,436.14/2,108.45
  6. Step 6: Final answer
    x = 1,849.44

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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.