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Finding the Fourth Proportional to 3,393.21, 4,682.22 and 1,900.79

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Solution

The fourth proportional to 3,393.21, 4,682.22 and 1,900.79 is: 2,622.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.21 : 4,682.22 = 1,900.79 : x
  2. Step 2: Convert to fraction form
    3,393.21/4,682.22 = 1,900.79/x
  3. Step 3: Cross multiply
    3,393.21x = 4,682.22 × 1,900.79
  4. Step 4: Simplify right side
    3,393.21x = 8,899,893.54
  5. Step 5: Solve for x
    x = 8,899,893.54/3,393.21
  6. Step 6: Final answer
    x = 2,622.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.