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Finding the Fourth Proportional to 5,446.60, 8,166.60 and 2,155.90

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Solution

The fourth proportional to 5,446.60, 8,166.60 and 2,155.90 is: 3,232.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,446.60 : 8,166.60 = 2,155.90 : x
  2. Step 2: Convert to fraction form
    5,446.60/8,166.60 = 2,155.90/x
  3. Step 3: Cross multiply
    5,446.60x = 8,166.60 × 2,155.90
  4. Step 4: Simplify right side
    5,446.60x = 17,606,372.94
  5. Step 5: Solve for x
    x = 17,606,372.94/5,446.60
  6. Step 6: Final answer
    x = 3,232.54

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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.