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Finding the Fourth Proportional to 3,659.97, 5,489.88 and 886.62

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Solution

The fourth proportional to 3,659.97, 5,489.88 and 886.62 is: 1,329.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,659.97 : 5,489.88 = 886.62 : x
  2. Step 2: Convert to fraction form
    3,659.97/5,489.88 = 886.62/x
  3. Step 3: Cross multiply
    3,659.97x = 5,489.88 × 886.62
  4. Step 4: Simplify right side
    3,659.97x = 4,867,437.41
  5. Step 5: Solve for x
    x = 4,867,437.41/3,659.97
  6. Step 6: Final answer
    x = 1,329.91

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Similar ratio
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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.