Home / 8,129.25-12,195.37-2,581.09

Finding the Fourth Proportional to 8,129.25, 12,195.37 and 2,581.09

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Solution

The fourth proportional to 8,129.25, 12,195.37 and 2,581.09 is: 3,872.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.25 : 12,195.37 = 2,581.09 : x
  2. Step 2: Convert to fraction form
    8,129.25/12,195.37 = 2,581.09/x
  3. Step 3: Cross multiply
    8,129.25x = 12,195.37 × 2,581.09
  4. Step 4: Simplify right side
    8,129.25x = 31,477,347.55
  5. Step 5: Solve for x
    x = 31,477,347.55/8,129.25
  6. Step 6: Final answer
    x = 3,872.11

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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.