Home / 5,121.36-7,676.39-2,000.43

Finding the Fourth Proportional to 5,121.36, 7,676.39 and 2,000.43

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Solution

The fourth proportional to 5,121.36, 7,676.39 and 2,000.43 is: 2,998.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.36 : 7,676.39 = 2,000.43 : x
  2. Step 2: Convert to fraction form
    5,121.36/7,676.39 = 2,000.43/x
  3. Step 3: Cross multiply
    5,121.36x = 7,676.39 × 2,000.43
  4. Step 4: Simplify right side
    5,121.36x = 15,356,085.85
  5. Step 5: Solve for x
    x = 15,356,085.85/5,121.36
  6. Step 6: Final answer
    x = 2,998.44

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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.