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Finding the Fourth Proportional to 1,234.86, 1,850.46 and 1,143.74

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Solution

The fourth proportional to 1,234.86, 1,850.46 and 1,143.74 is: 1,713.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234.86 : 1,850.46 = 1,143.74 : x
  2. Step 2: Convert to fraction form
    1,234.86/1,850.46 = 1,143.74/x
  3. Step 3: Cross multiply
    1,234.86x = 1,850.46 × 1,143.74
  4. Step 4: Simplify right side
    1,234.86x = 2,116,435.87
  5. Step 5: Solve for x
    x = 2,116,435.87/1,234.86
  6. Step 6: Final answer
    x = 1,713.91

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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.