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Finding the Fourth Proportional to 3,591.39, 5,387.18 and 994.32

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Solution

The fourth proportional to 3,591.39, 5,387.18 and 994.32 is: 1,491.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.39 : 5,387.18 = 994.32 : x
  2. Step 2: Convert to fraction form
    3,591.39/5,387.18 = 994.32/x
  3. Step 3: Cross multiply
    3,591.39x = 5,387.18 × 994.32
  4. Step 4: Simplify right side
    3,591.39x = 5,356,575.85
  5. Step 5: Solve for x
    x = 5,356,575.85/3,591.39
  6. Step 6: Final answer
    x = 1,491.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,592.39, 5,388.68 and 995.32
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.