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Finding the Fourth Proportional to 8,150.40, 12,225.60 and 1,994.40

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Solution

The fourth proportional to 8,150.40, 12,225.60 and 1,994.40 is: 2,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,150.40 : 12,225.60 = 1,994.40 : x
  2. Step 2: Convert to fraction form
    8,150.40/12,225.60 = 1,994.40/x
  3. Step 3: Cross multiply
    8,150.40x = 12,225.60 × 1,994.40
  4. Step 4: Simplify right side
    8,150.40x = 24,382,736.64
  5. Step 5: Solve for x
    x = 24,382,736.64/8,150.40
  6. Step 6: Final answer
    x = 2,991.60

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Similar ratio
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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.