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Finding the Fourth Proportional to 5,861.60, 8,789.36 and 2,163.68

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Solution

The fourth proportional to 5,861.60, 8,789.36 and 2,163.68 is: 3,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861.60 : 8,789.36 = 2,163.68 : x
  2. Step 2: Convert to fraction form
    5,861.60/8,789.36 = 2,163.68/x
  3. Step 3: Cross multiply
    5,861.60x = 8,789.36 × 2,163.68
  4. Step 4: Simplify right side
    5,861.60x = 19,017,362.44
  5. Step 5: Solve for x
    x = 19,017,362.44/5,861.60
  6. Step 6: Final answer
    x = 3,244.40

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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.