Home / 2,127.78-3,183.65-1,911.96

Finding the Fourth Proportional to 2,127.78, 3,183.65 and 1,911.96

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Solution

The fourth proportional to 2,127.78, 3,183.65 and 1,911.96 is: 2,860.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.78 : 3,183.65 = 1,911.96 : x
  2. Step 2: Convert to fraction form
    2,127.78/3,183.65 = 1,911.96/x
  3. Step 3: Cross multiply
    2,127.78x = 3,183.65 × 1,911.96
  4. Step 4: Simplify right side
    2,127.78x = 6,087,011.45
  5. Step 5: Solve for x
    x = 6,087,011.45/2,127.78
  6. Step 6: Final answer
    x = 2,860.73

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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.