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Finding the Fourth Proportional to 3,074.59, 4,611.87 and 994.90

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Solution

The fourth proportional to 3,074.59, 4,611.87 and 994.90 is: 1,492.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.59 : 4,611.87 = 994.90 : x
  2. Step 2: Convert to fraction form
    3,074.59/4,611.87 = 994.90/x
  3. Step 3: Cross multiply
    3,074.59x = 4,611.87 × 994.90
  4. Step 4: Simplify right side
    3,074.59x = 4,588,349.46
  5. Step 5: Solve for x
    x = 4,588,349.46/3,074.59
  6. Step 6: Final answer
    x = 1,492.35

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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.