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Finding the Fourth Proportional to 1,224.86, 1,839.11 and 1,202.99

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Solution

The fourth proportional to 1,224.86, 1,839.11 and 1,202.99 is: 1,806.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.86 : 1,839.11 = 1,202.99 : x
  2. Step 2: Convert to fraction form
    1,224.86/1,839.11 = 1,202.99/x
  3. Step 3: Cross multiply
    1,224.86x = 1,839.11 × 1,202.99
  4. Step 4: Simplify right side
    1,224.86x = 2,212,415.73
  5. Step 5: Solve for x
    x = 2,212,415.73/1,224.86
  6. Step 6: Final answer
    x = 1,806.27

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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.