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Finding the Fourth Proportional to 9,149.90, 12,627.11 and 5,170.92

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Solution

The fourth proportional to 9,149.90, 12,627.11 and 5,170.92 is: 7,136.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,149.90 : 12,627.11 = 5,170.92 : x
  2. Step 2: Convert to fraction form
    9,149.90/12,627.11 = 5,170.92/x
  3. Step 3: Cross multiply
    9,149.90x = 12,627.11 × 5,170.92
  4. Step 4: Simplify right side
    9,149.90x = 65,293,749.79
  5. Step 5: Solve for x
    x = 65,293,749.79/9,149.90
  6. Step 6: Final answer
    x = 7,136.01

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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.