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Finding the Fourth Proportional to 7,086.60, 10,629.90 and 2,704.20

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Solution

The fourth proportional to 7,086.60, 10,629.90 and 2,704.20 is: 4,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,086.60 : 10,629.90 = 2,704.20 : x
  2. Step 2: Convert to fraction form
    7,086.60/10,629.90 = 2,704.20/x
  3. Step 3: Cross multiply
    7,086.60x = 10,629.90 × 2,704.20
  4. Step 4: Simplify right side
    7,086.60x = 28,745,375.58
  5. Step 5: Solve for x
    x = 28,745,375.58/7,086.60
  6. Step 6: Final answer
    x = 4,056.30

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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.