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Finding the Fourth Proportional to 4,775.40, 7,163.10 and 3,954.60

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Solution

The fourth proportional to 4,775.40, 7,163.10 and 3,954.60 is: 5,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,775.40 : 7,163.10 = 3,954.60 : x
  2. Step 2: Convert to fraction form
    4,775.40/7,163.10 = 3,954.60/x
  3. Step 3: Cross multiply
    4,775.40x = 7,163.10 × 3,954.60
  4. Step 4: Simplify right side
    4,775.40x = 28,327,195.26
  5. Step 5: Solve for x
    x = 28,327,195.26/4,775.40
  6. Step 6: Final answer
    x = 5,931.90

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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.