Home / 4,128.75-6,193.89-1,355.58

Finding the Fourth Proportional to 4,128.75, 6,193.89 and 1,355.58

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Solution

The fourth proportional to 4,128.75, 6,193.89 and 1,355.58 is: 2,033.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.75 : 6,193.89 = 1,355.58 : x
  2. Step 2: Convert to fraction form
    4,128.75/6,193.89 = 1,355.58/x
  3. Step 3: Cross multiply
    4,128.75x = 6,193.89 × 1,355.58
  4. Step 4: Simplify right side
    4,128.75x = 8,396,313.41
  5. Step 5: Solve for x
    x = 8,396,313.41/4,128.75
  6. Step 6: Final answer
    x = 2,033.62

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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.