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Finding the Fourth Proportional to 2,299.92, 3,450.96 and 839.76

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Solution

The fourth proportional to 2,299.92, 3,450.96 and 839.76 is: 1,260.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,299.92 : 3,450.96 = 839.76 : x
  2. Step 2: Convert to fraction form
    2,299.92/3,450.96 = 839.76/x
  3. Step 3: Cross multiply
    2,299.92x = 3,450.96 × 839.76
  4. Step 4: Simplify right side
    2,299.92x = 2,897,978.17
  5. Step 5: Solve for x
    x = 2,897,978.17/2,299.92
  6. Step 6: Final answer
    x = 1,260.03

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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.