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Finding the Fourth Proportional to 3,190.38, 4,785.83 and 881.88

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Solution

The fourth proportional to 3,190.38, 4,785.83 and 881.88 is: 1,322.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.38 : 4,785.83 = 881.88 : x
  2. Step 2: Convert to fraction form
    3,190.38/4,785.83 = 881.88/x
  3. Step 3: Cross multiply
    3,190.38x = 4,785.83 × 881.88
  4. Step 4: Simplify right side
    3,190.38x = 4,220,527.76
  5. Step 5: Solve for x
    x = 4,220,527.76/3,190.38
  6. Step 6: Final answer
    x = 1,322.89

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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.