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Finding the Fourth Proportional to 2,861.82, 4,292.73 and 914.19

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Solution

The fourth proportional to 2,861.82, 4,292.73 and 914.19 is: 1,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.82 : 4,292.73 = 914.19 : x
  2. Step 2: Convert to fraction form
    2,861.82/4,292.73 = 914.19/x
  3. Step 3: Cross multiply
    2,861.82x = 4,292.73 × 914.19
  4. Step 4: Simplify right side
    2,861.82x = 3,924,370.84
  5. Step 5: Solve for x
    x = 3,924,370.84/2,861.82
  6. Step 6: Final answer
    x = 1,371.29

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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.