Home / 8,128.92-12,193.81-2,582.72

Finding the Fourth Proportional to 8,128.92, 12,193.81 and 2,582.72

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Solution

The fourth proportional to 8,128.92, 12,193.81 and 2,582.72 is: 3,874.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.92 : 12,193.81 = 2,582.72 : x
  2. Step 2: Convert to fraction form
    8,128.92/12,193.81 = 2,582.72/x
  3. Step 3: Cross multiply
    8,128.92x = 12,193.81 × 2,582.72
  4. Step 4: Simplify right side
    8,128.92x = 31,493,175.26
  5. Step 5: Solve for x
    x = 31,493,175.26/8,128.92
  6. Step 6: Final answer
    x = 3,874.21

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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.