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Finding the Fourth Proportional to 8,958.92, 13,431.72 and 5,449.64

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Solution

The fourth proportional to 8,958.92, 13,431.72 and 5,449.64 is: 8,170.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.92 : 13,431.72 = 5,449.64 : x
  2. Step 2: Convert to fraction form
    8,958.92/13,431.72 = 5,449.64/x
  3. Step 3: Cross multiply
    8,958.92x = 13,431.72 × 5,449.64
  4. Step 4: Simplify right side
    8,958.92x = 73,198,038.58
  5. Step 5: Solve for x
    x = 73,198,038.58/8,958.92
  6. Step 6: Final answer
    x = 8,170.41

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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.