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Finding the Fourth Proportional to 3,074.90, 4,612.94 and 995.42

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Solution

The fourth proportional to 3,074.90, 4,612.94 and 995.42 is: 1,493.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.90 : 4,612.94 = 995.42 : x
  2. Step 2: Convert to fraction form
    3,074.90/4,612.94 = 995.42/x
  3. Step 3: Cross multiply
    3,074.90x = 4,612.94 × 995.42
  4. Step 4: Simplify right side
    3,074.90x = 4,591,812.73
  5. Step 5: Solve for x
    x = 4,591,812.73/3,074.90
  6. Step 6: Final answer
    x = 1,493.32

Related Problems

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Double scale
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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.