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Finding the Fourth Proportional to 3,190.86, 4,784.49 and 1,240.83

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Solution

The fourth proportional to 3,190.86, 4,784.49 and 1,240.83 is: 1,860.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.86 : 4,784.49 = 1,240.83 : x
  2. Step 2: Convert to fraction form
    3,190.86/4,784.49 = 1,240.83/x
  3. Step 3: Cross multiply
    3,190.86x = 4,784.49 × 1,240.83
  4. Step 4: Simplify right side
    3,190.86x = 5,936,738.73
  5. Step 5: Solve for x
    x = 5,936,738.73/3,190.86
  6. Step 6: Final answer
    x = 1,860.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.