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Finding the Fourth Proportional to 2,786.02, 4,179.63 and 838.37

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Solution

The fourth proportional to 2,786.02, 4,179.63 and 838.37 is: 1,257.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.02 : 4,179.63 = 838.37 : x
  2. Step 2: Convert to fraction form
    2,786.02/4,179.63 = 838.37/x
  3. Step 3: Cross multiply
    2,786.02x = 4,179.63 × 838.37
  4. Step 4: Simplify right side
    2,786.02x = 3,504,076.40
  5. Step 5: Solve for x
    x = 3,504,076.40/2,786.02
  6. Step 6: Final answer
    x = 1,257.74

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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.