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Finding the Fourth Proportional to 4,743.88, 7,115.84 and 2,793.76

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Solution

The fourth proportional to 4,743.88, 7,115.84 and 2,793.76 is: 4,190.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,743.88 : 7,115.84 = 2,793.76 : x
  2. Step 2: Convert to fraction form
    4,743.88/7,115.84 = 2,793.76/x
  3. Step 3: Cross multiply
    4,743.88x = 7,115.84 × 2,793.76
  4. Step 4: Simplify right side
    4,743.88x = 19,879,949.16
  5. Step 5: Solve for x
    x = 19,879,949.16/4,743.88
  6. Step 6: Final answer
    x = 4,190.65

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1.5x scale

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.