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Finding the Fourth Proportional to 3,885.22, 5,827.83 and 963.55

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Solution

The fourth proportional to 3,885.22, 5,827.83 and 963.55 is: 1,445.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.22 : 5,827.83 = 963.55 : x
  2. Step 2: Convert to fraction form
    3,885.22/5,827.83 = 963.55/x
  3. Step 3: Cross multiply
    3,885.22x = 5,827.83 × 963.55
  4. Step 4: Simplify right side
    3,885.22x = 5,615,405.60
  5. Step 5: Solve for x
    x = 5,615,405.60/3,885.22
  6. Step 6: Final answer
    x = 1,445.33

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Double scale
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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.