Home / 2,756.11-4,135.71-2,141.05

Finding the Fourth Proportional to 2,756.11, 4,135.71 and 2,141.05

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Solution

The fourth proportional to 2,756.11, 4,135.71 and 2,141.05 is: 3,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756.11 : 4,135.71 = 2,141.05 : x
  2. Step 2: Convert to fraction form
    2,756.11/4,135.71 = 2,141.05/x
  3. Step 3: Cross multiply
    2,756.11x = 4,135.71 × 2,141.05
  4. Step 4: Simplify right side
    2,756.11x = 8,854,761.90
  5. Step 5: Solve for x
    x = 8,854,761.90/2,756.11
  6. Step 6: Final answer
    x = 3,212.78

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1.5x scale

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.