Home / 2,720.70-4,083.11-1,992.17

Finding the Fourth Proportional to 2,720.70, 4,083.11 and 1,992.17

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Solution

The fourth proportional to 2,720.70, 4,083.11 and 1,992.17 is: 2,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.70 : 4,083.11 = 1,992.17 : x
  2. Step 2: Convert to fraction form
    2,720.70/4,083.11 = 1,992.17/x
  3. Step 3: Cross multiply
    2,720.70x = 4,083.11 × 1,992.17
  4. Step 4: Simplify right side
    2,720.70x = 8,134,218.87
  5. Step 5: Solve for x
    x = 8,134,218.87/2,720.70
  6. Step 6: Final answer
    x = 2,989.75

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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.