Home / 8,419.38-12,630.90-2,576.43

Finding the Fourth Proportional to 8,419.38, 12,630.90 and 2,576.43

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Solution

The fourth proportional to 8,419.38, 12,630.90 and 2,576.43 is: 3,865.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.38 : 12,630.90 = 2,576.43 : x
  2. Step 2: Convert to fraction form
    8,419.38/12,630.90 = 2,576.43/x
  3. Step 3: Cross multiply
    8,419.38x = 12,630.90 × 2,576.43
  4. Step 4: Simplify right side
    8,419.38x = 32,542,629.69
  5. Step 5: Solve for x
    x = 32,542,629.69/8,419.38
  6. Step 6: Final answer
    x = 3,865.21

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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.