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Finding the Fourth Proportional to 2,091.09, 3,137.10 and 792.57

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Solution

The fourth proportional to 2,091.09, 3,137.10 and 792.57 is: 1,189.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.09 : 3,137.10 = 792.57 : x
  2. Step 2: Convert to fraction form
    2,091.09/3,137.10 = 792.57/x
  3. Step 3: Cross multiply
    2,091.09x = 3,137.10 × 792.57
  4. Step 4: Simplify right side
    2,091.09x = 2,486,371.35
  5. Step 5: Solve for x
    x = 2,486,371.35/2,091.09
  6. Step 6: Final answer
    x = 1,189.03

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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.