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Finding the Fourth Proportional to 3,190.67, 4,785.45 and 881.63

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Solution

The fourth proportional to 3,190.67, 4,785.45 and 881.63 is: 1,322.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.67 : 4,785.45 = 881.63 : x
  2. Step 2: Convert to fraction form
    3,190.67/4,785.45 = 881.63/x
  3. Step 3: Cross multiply
    3,190.67x = 4,785.45 × 881.63
  4. Step 4: Simplify right side
    3,190.67x = 4,218,972.36
  5. Step 5: Solve for x
    x = 4,218,972.36/3,190.67
  6. Step 6: Final answer
    x = 1,322.29

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1.5x scale

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.