Home / 6,261.28-8,639.94-3,608.80

Finding the Fourth Proportional to 6,261.28, 8,639.94 and 3,608.80

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Solution

The fourth proportional to 6,261.28, 8,639.94 and 3,608.80 is: 4,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261.28 : 8,639.94 = 3,608.80 : x
  2. Step 2: Convert to fraction form
    6,261.28/8,639.94 = 3,608.80/x
  3. Step 3: Cross multiply
    6,261.28x = 8,639.94 × 3,608.80
  4. Step 4: Simplify right side
    6,261.28x = 31,179,815.47
  5. Step 5: Solve for x
    x = 31,179,815.47/6,261.28
  6. Step 6: Final answer
    x = 4,979.78

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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.