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Finding the Fourth Proportional to 3,659.56, 5,489.34 and 886.23

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Solution

The fourth proportional to 3,659.56, 5,489.34 and 886.23 is: 1,329.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,659.56 : 5,489.34 = 886.23 : x
  2. Step 2: Convert to fraction form
    3,659.56/5,489.34 = 886.23/x
  3. Step 3: Cross multiply
    3,659.56x = 5,489.34 × 886.23
  4. Step 4: Simplify right side
    3,659.56x = 4,864,824.55
  5. Step 5: Solve for x
    x = 4,864,824.55/3,659.56
  6. Step 6: Final answer
    x = 1,329.35

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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.