Home / 2,109.15-3,164.85-793.80

Finding the Fourth Proportional to 2,109.15, 3,164.85 and 793.80

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Solution

The fourth proportional to 2,109.15, 3,164.85 and 793.80 is: 1,191.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.15 : 3,164.85 = 793.80 : x
  2. Step 2: Convert to fraction form
    2,109.15/3,164.85 = 793.80/x
  3. Step 3: Cross multiply
    2,109.15x = 3,164.85 × 793.80
  4. Step 4: Simplify right side
    2,109.15x = 2,512,257.93
  5. Step 5: Solve for x
    x = 2,512,257.93/2,109.15
  6. Step 6: Final answer
    x = 1,191.12

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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.