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Finding the Fourth Proportional to 4,787.70, 7,182.82 and 2,190.03

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Solution

The fourth proportional to 4,787.70, 7,182.82 and 2,190.03 is: 3,285.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.70 : 7,182.82 = 2,190.03 : x
  2. Step 2: Convert to fraction form
    4,787.70/7,182.82 = 2,190.03/x
  3. Step 3: Cross multiply
    4,787.70x = 7,182.82 × 2,190.03
  4. Step 4: Simplify right side
    4,787.70x = 15,730,591.28
  5. Step 5: Solve for x
    x = 15,730,591.28/4,787.70
  6. Step 6: Final answer
    x = 3,285.63

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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.