Home / 2,760.04-4,138.60-811.96

Finding the Fourth Proportional to 2,760.04, 4,138.60 and 811.96

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Solution

The fourth proportional to 2,760.04, 4,138.60 and 811.96 is: 1,217.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.04 : 4,138.60 = 811.96 : x
  2. Step 2: Convert to fraction form
    2,760.04/4,138.60 = 811.96/x
  3. Step 3: Cross multiply
    2,760.04x = 4,138.60 × 811.96
  4. Step 4: Simplify right side
    2,760.04x = 3,360,377.66
  5. Step 5: Solve for x
    x = 3,360,377.66/2,760.04
  6. Step 6: Final answer
    x = 1,217.51

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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.