Home / 2,755.62-4,129.79-2,021.76

Finding the Fourth Proportional to 2,755.62, 4,129.79 and 2,021.76

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Solution

The fourth proportional to 2,755.62, 4,129.79 and 2,021.76 is: 3,029.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.62 : 4,129.79 = 2,021.76 : x
  2. Step 2: Convert to fraction form
    2,755.62/4,129.79 = 2,021.76/x
  3. Step 3: Cross multiply
    2,755.62x = 4,129.79 × 2,021.76
  4. Step 4: Simplify right side
    2,755.62x = 8,349,434.12
  5. Step 5: Solve for x
    x = 8,349,434.12/2,755.62
  6. Step 6: Final answer
    x = 3,029.97

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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.