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Finding the Fourth Proportional to 3,591.66, 4,956.96 and 2,019.78

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Solution

The fourth proportional to 3,591.66, 4,956.96 and 2,019.78 is: 2,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.66 : 4,956.96 = 2,019.78 : x
  2. Step 2: Convert to fraction form
    3,591.66/4,956.96 = 2,019.78/x
  3. Step 3: Cross multiply
    3,591.66x = 4,956.96 × 2,019.78
  4. Step 4: Simplify right side
    3,591.66x = 10,011,968.67
  5. Step 5: Solve for x
    x = 10,011,968.67/3,591.66
  6. Step 6: Final answer
    x = 2,787.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.