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Finding the Fourth Proportional to 3,355.78, 4,630.83 and 1,863.58

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Solution

The fourth proportional to 3,355.78, 4,630.83 and 1,863.58 is: 2,571.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.78 : 4,630.83 = 1,863.58 : x
  2. Step 2: Convert to fraction form
    3,355.78/4,630.83 = 1,863.58/x
  3. Step 3: Cross multiply
    3,355.78x = 4,630.83 × 1,863.58
  4. Step 4: Simplify right side
    3,355.78x = 8,629,922.17
  5. Step 5: Solve for x
    x = 8,629,922.17/3,355.78
  6. Step 6: Final answer
    x = 2,571.66

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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.