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Finding the Fourth Proportional to 2,414.09, 3,621.06 and 770.60

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Solution

The fourth proportional to 2,414.09, 3,621.06 and 770.60 is: 1,155.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,414.09 : 3,621.06 = 770.60 : x
  2. Step 2: Convert to fraction form
    2,414.09/3,621.06 = 770.60/x
  3. Step 3: Cross multiply
    2,414.09x = 3,621.06 × 770.60
  4. Step 4: Simplify right side
    2,414.09x = 2,790,370.73
  5. Step 5: Solve for x
    x = 2,790,370.73/2,414.09
  6. Step 6: Final answer
    x = 1,155.87

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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.