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Finding the Fourth Proportional to 2,793.57, 4,189.95 and 845.93

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Solution

The fourth proportional to 2,793.57, 4,189.95 and 845.93 is: 1,268.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,793.57 : 4,189.95 = 845.93 : x
  2. Step 2: Convert to fraction form
    2,793.57/4,189.95 = 845.93/x
  3. Step 3: Cross multiply
    2,793.57x = 4,189.95 × 845.93
  4. Step 4: Simplify right side
    2,793.57x = 3,544,383.45
  5. Step 5: Solve for x
    x = 3,544,383.45/2,793.57
  6. Step 6: Final answer
    x = 1,268.76

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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.