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Finding the Fourth Proportional to 3,591.85, 5,388.08 and 994.78

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Solution

The fourth proportional to 3,591.85, 5,388.08 and 994.78 is: 1,492.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.85 : 5,388.08 = 994.78 : x
  2. Step 2: Convert to fraction form
    3,591.85/5,388.08 = 994.78/x
  3. Step 3: Cross multiply
    3,591.85x = 5,388.08 × 994.78
  4. Step 4: Simplify right side
    3,591.85x = 5,359,954.22
  5. Step 5: Solve for x
    x = 5,359,954.22/3,591.85
  6. Step 6: Final answer
    x = 1,492.25

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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.