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Finding the Fourth Proportional to 2,149.80, 3,224.70 and 994.92

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Solution

The fourth proportional to 2,149.80, 3,224.70 and 994.92 is: 1,492.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.80 : 3,224.70 = 994.92 : x
  2. Step 2: Convert to fraction form
    2,149.80/3,224.70 = 994.92/x
  3. Step 3: Cross multiply
    2,149.80x = 3,224.70 × 994.92
  4. Step 4: Simplify right side
    2,149.80x = 3,208,318.52
  5. Step 5: Solve for x
    x = 3,208,318.52/2,149.80
  6. Step 6: Final answer
    x = 1,492.38

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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.