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Finding the Fourth Proportional to 6,618.69, 9,928.35 and 3,694.77

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Solution

The fourth proportional to 6,618.69, 9,928.35 and 3,694.77 is: 5,542.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.69 : 9,928.35 = 3,694.77 : x
  2. Step 2: Convert to fraction form
    6,618.69/9,928.35 = 3,694.77/x
  3. Step 3: Cross multiply
    6,618.69x = 9,928.35 × 3,694.77
  4. Step 4: Simplify right side
    6,618.69x = 36,682,969.73
  5. Step 5: Solve for x
    x = 36,682,969.73/6,618.69
  6. Step 6: Final answer
    x = 5,542.33

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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.