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Finding the Fourth Proportional to 8,682.81, 13,024.21 and 2,108.99

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Solution

The fourth proportional to 8,682.81, 13,024.21 and 2,108.99 is: 3,163.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.81 : 13,024.21 = 2,108.99 : x
  2. Step 2: Convert to fraction form
    8,682.81/13,024.21 = 2,108.99/x
  3. Step 3: Cross multiply
    8,682.81x = 13,024.21 × 2,108.99
  4. Step 4: Simplify right side
    8,682.81x = 27,467,928.65
  5. Step 5: Solve for x
    x = 27,467,928.65/8,682.81
  6. Step 6: Final answer
    x = 3,163.48

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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.