Home / 3,276.25-4,914.38-811.04

Finding the Fourth Proportional to 3,276.25, 4,914.38 and 811.04

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Solution

The fourth proportional to 3,276.25, 4,914.38 and 811.04 is: 1,216.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,276.25 : 4,914.38 = 811.04 : x
  2. Step 2: Convert to fraction form
    3,276.25/4,914.38 = 811.04/x
  3. Step 3: Cross multiply
    3,276.25x = 4,914.38 × 811.04
  4. Step 4: Simplify right side
    3,276.25x = 3,985,736.21
  5. Step 5: Solve for x
    x = 3,985,736.21/3,276.25
  6. Step 6: Final answer
    x = 1,216.56

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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.