Home / 8,129.72-12,193.16-2,581.83

Finding the Fourth Proportional to 8,129.72, 12,193.16 and 2,581.83

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Solution

The fourth proportional to 8,129.72, 12,193.16 and 2,581.83 is: 3,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.72 : 12,193.16 = 2,581.83 : x
  2. Step 2: Convert to fraction form
    8,129.72/12,193.16 = 2,581.83/x
  3. Step 3: Cross multiply
    8,129.72x = 12,193.16 × 2,581.83
  4. Step 4: Simplify right side
    8,129.72x = 31,480,653.37
  5. Step 5: Solve for x
    x = 31,480,653.37/8,129.72
  6. Step 6: Final answer
    x = 3,872.29

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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.