Home / 2,755.11-4,134.21-2,140.05

Finding the Fourth Proportional to 2,755.11, 4,134.21 and 2,140.05

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Solution

The fourth proportional to 2,755.11, 4,134.21 and 2,140.05 is: 3,211.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.11 : 4,134.21 = 2,140.05 : x
  2. Step 2: Convert to fraction form
    2,755.11/4,134.21 = 2,140.05/x
  3. Step 3: Cross multiply
    2,755.11x = 4,134.21 × 2,140.05
  4. Step 4: Simplify right side
    2,755.11x = 8,847,416.11
  5. Step 5: Solve for x
    x = 8,847,416.11/2,755.11
  6. Step 6: Final answer
    x = 3,211.28

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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.