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Finding the Fourth Proportional to 8,709.11, 13,065.23 and 3,170.22

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Solution

The fourth proportional to 8,709.11, 13,065.23 and 3,170.22 is: 4,755.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.11 : 13,065.23 = 3,170.22 : x
  2. Step 2: Convert to fraction form
    8,709.11/13,065.23 = 3,170.22/x
  3. Step 3: Cross multiply
    8,709.11x = 13,065.23 × 3,170.22
  4. Step 4: Simplify right side
    8,709.11x = 41,419,637.60
  5. Step 5: Solve for x
    x = 41,419,637.60/8,709.11
  6. Step 6: Final answer
    x = 4,755.90

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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.