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Finding the Fourth Proportional to 9,149.44, 12,608.80 and 8,980.96

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Solution

The fourth proportional to 9,149.44, 12,608.80 and 8,980.96 is: 12,376.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,149.44 : 12,608.80 = 8,980.96 : x
  2. Step 2: Convert to fraction form
    9,149.44/12,608.80 = 8,980.96/x
  3. Step 3: Cross multiply
    9,149.44x = 12,608.80 × 8,980.96
  4. Step 4: Simplify right side
    9,149.44x = 113,239,128.45
  5. Step 5: Solve for x
    x = 113,239,128.45/9,149.44
  6. Step 6: Final answer
    x = 12,376.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.