Home / 5,311.57-7,961.59-2,672.76

Finding the Fourth Proportional to 5,311.57, 7,961.59 and 2,672.76

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Solution

The fourth proportional to 5,311.57, 7,961.59 and 2,672.76 is: 4,006.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.57 : 7,961.59 = 2,672.76 : x
  2. Step 2: Convert to fraction form
    5,311.57/7,961.59 = 2,672.76/x
  3. Step 3: Cross multiply
    5,311.57x = 7,961.59 × 2,672.76
  4. Step 4: Simplify right side
    5,311.57x = 21,279,419.29
  5. Step 5: Solve for x
    x = 21,279,419.29/5,311.57
  6. Step 6: Final answer
    x = 4,006.24

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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.