Home / 2,747.79-4,122.29-800.15

Finding the Fourth Proportional to 2,747.79, 4,122.29 and 800.15

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Solution

The fourth proportional to 2,747.79, 4,122.29 and 800.15 is: 1,200.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.79 : 4,122.29 = 800.15 : x
  2. Step 2: Convert to fraction form
    2,747.79/4,122.29 = 800.15/x
  3. Step 3: Cross multiply
    2,747.79x = 4,122.29 × 800.15
  4. Step 4: Simplify right side
    2,747.79x = 3,298,425.73
  5. Step 5: Solve for x
    x = 3,298,425.73/2,747.79
  6. Step 6: Final answer
    x = 1,200.39

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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.