Home / 2,126.43-3,183.84-1,539.72

Finding the Fourth Proportional to 2,126.43, 3,183.84 and 1,539.72

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Solution

The fourth proportional to 2,126.43, 3,183.84 and 1,539.72 is: 2,305.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.43 : 3,183.84 = 1,539.72 : x
  2. Step 2: Convert to fraction form
    2,126.43/3,183.84 = 1,539.72/x
  3. Step 3: Cross multiply
    2,126.43x = 3,183.84 × 1,539.72
  4. Step 4: Simplify right side
    2,126.43x = 4,902,222.12
  5. Step 5: Solve for x
    x = 4,902,222.12/2,126.43
  6. Step 6: Final answer
    x = 2,305.38

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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.