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Finding the Fourth Proportional to 4,800, 6,624 and 2,704.20

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Solution

The fourth proportional to 4,800, 6,624 and 2,704.20 is: 3,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,800 : 6,624 = 2,704.20 : x
  2. Step 2: Convert to fraction form
    4,800/6,624 = 2,704.20/x
  3. Step 3: Cross multiply
    4,800x = 6,624 × 2,704.20
  4. Step 4: Simplify right side
    4,800x = 17,912,620.80
  5. Step 5: Solve for x
    x = 17,912,620.80/4,800
  6. Step 6: Final answer
    x = 3,731.80

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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.