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Finding the Fourth Proportional to 2,414.73, 3,621.31 and 770.88

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Solution

The fourth proportional to 2,414.73, 3,621.31 and 770.88 is: 1,156.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,414.73 : 3,621.31 = 770.88 : x
  2. Step 2: Convert to fraction form
    2,414.73/3,621.31 = 770.88/x
  3. Step 3: Cross multiply
    2,414.73x = 3,621.31 × 770.88
  4. Step 4: Simplify right side
    2,414.73x = 2,791,593.53
  5. Step 5: Solve for x
    x = 2,791,593.53/2,414.73
  6. Step 6: Final answer
    x = 1,156.07

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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.