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Finding the Fourth Proportional to 3,647.70, 5,475.60 and 2,829.60

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Solution

The fourth proportional to 3,647.70, 5,475.60 and 2,829.60 is: 4,247.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,647.70 : 5,475.60 = 2,829.60 : x
  2. Step 2: Convert to fraction form
    3,647.70/5,475.60 = 2,829.60/x
  3. Step 3: Cross multiply
    3,647.70x = 5,475.60 × 2,829.60
  4. Step 4: Simplify right side
    3,647.70x = 15,493,757.76
  5. Step 5: Solve for x
    x = 15,493,757.76/3,647.70
  6. Step 6: Final answer
    x = 4,247.54

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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.