Home / 5,123.35-7,687.96-2,161.58

Finding the Fourth Proportional to 5,123.35, 7,687.96 and 2,161.58

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Solution

The fourth proportional to 5,123.35, 7,687.96 and 2,161.58 is: 3,243.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.35 : 7,687.96 = 2,161.58 : x
  2. Step 2: Convert to fraction form
    5,123.35/7,687.96 = 2,161.58/x
  3. Step 3: Cross multiply
    5,123.35x = 7,687.96 × 2,161.58
  4. Step 4: Simplify right side
    5,123.35x = 16,618,140.58
  5. Step 5: Solve for x
    x = 16,618,140.58/5,123.35
  6. Step 6: Final answer
    x = 3,243.61

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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.