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Finding the Fourth Proportional to 3,231.62, 4,847.06 and 891.80

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Solution

The fourth proportional to 3,231.62, 4,847.06 and 891.80 is: 1,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.62 : 4,847.06 = 891.80 : x
  2. Step 2: Convert to fraction form
    3,231.62/4,847.06 = 891.80/x
  3. Step 3: Cross multiply
    3,231.62x = 4,847.06 × 891.80
  4. Step 4: Simplify right side
    3,231.62x = 4,322,608.11
  5. Step 5: Solve for x
    x = 4,322,608.11/3,231.62
  6. Step 6: Final answer
    x = 1,337.60

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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.