Home / 8,151.82-12,230.36-3,218.72

Finding the Fourth Proportional to 8,151.82, 12,230.36 and 3,218.72

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Solution

The fourth proportional to 8,151.82, 12,230.36 and 3,218.72 is: 4,829.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.82 : 12,230.36 = 3,218.72 : x
  2. Step 2: Convert to fraction form
    8,151.82/12,230.36 = 3,218.72/x
  3. Step 3: Cross multiply
    8,151.82x = 12,230.36 × 3,218.72
  4. Step 4: Simplify right side
    8,151.82x = 39,366,104.34
  5. Step 5: Solve for x
    x = 39,366,104.34/8,151.82
  6. Step 6: Final answer
    x = 4,829.12

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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.