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Finding the Fourth Proportional to 8,419.99, 12,629.97 and 2,576.61

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Solution

The fourth proportional to 8,419.99, 12,629.97 and 2,576.61 is: 3,864.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.99 : 12,629.97 = 2,576.61 : x
  2. Step 2: Convert to fraction form
    8,419.99/12,629.97 = 2,576.61/x
  3. Step 3: Cross multiply
    8,419.99x = 12,629.97 × 2,576.61
  4. Step 4: Simplify right side
    8,419.99x = 32,542,507.00
  5. Step 5: Solve for x
    x = 32,542,507.00/8,419.99
  6. Step 6: Final answer
    x = 3,864.91

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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.