Home / 2,850.21-4,276.80-2,161.17

Finding the Fourth Proportional to 2,850.21, 4,276.80 and 2,161.17

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Solution

The fourth proportional to 2,850.21, 4,276.80 and 2,161.17 is: 3,242.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.21 : 4,276.80 = 2,161.17 : x
  2. Step 2: Convert to fraction form
    2,850.21/4,276.80 = 2,161.17/x
  3. Step 3: Cross multiply
    2,850.21x = 4,276.80 × 2,161.17
  4. Step 4: Simplify right side
    2,850.21x = 9,242,891.86
  5. Step 5: Solve for x
    x = 9,242,891.86/2,850.21
  6. Step 6: Final answer
    x = 3,242.88

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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.