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Finding the Fourth Proportional to 3,793.15, 5,685.94 and 1,815.13

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Solution

The fourth proportional to 3,793.15, 5,685.94 and 1,815.13 is: 2,720.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,793.15 : 5,685.94 = 1,815.13 : x
  2. Step 2: Convert to fraction form
    3,793.15/5,685.94 = 1,815.13/x
  3. Step 3: Cross multiply
    3,793.15x = 5,685.94 × 1,815.13
  4. Step 4: Simplify right side
    3,793.15x = 10,320,720.27
  5. Step 5: Solve for x
    x = 10,320,720.27/3,793.15
  6. Step 6: Final answer
    x = 2,720.88

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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.