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Finding the Fourth Proportional to 2,489.74, 3,736.44 and 1,192.12

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Solution

The fourth proportional to 2,489.74, 3,736.44 and 1,192.12 is: 1,789.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.74 : 3,736.44 = 1,192.12 : x
  2. Step 2: Convert to fraction form
    2,489.74/3,736.44 = 1,192.12/x
  3. Step 3: Cross multiply
    2,489.74x = 3,736.44 × 1,192.12
  4. Step 4: Simplify right side
    2,489.74x = 4,454,284.85
  5. Step 5: Solve for x
    x = 4,454,284.85/2,489.74
  6. Step 6: Final answer
    x = 1,789.06

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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.