Home / 8,151.30-12,218.61-3,218.94

Finding the Fourth Proportional to 8,151.30, 12,218.61 and 3,218.94

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Solution

The fourth proportional to 8,151.30, 12,218.61 and 3,218.94 is: 4,825.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.30 : 12,218.61 = 3,218.94 : x
  2. Step 2: Convert to fraction form
    8,151.30/12,218.61 = 3,218.94/x
  3. Step 3: Cross multiply
    8,151.30x = 12,218.61 × 3,218.94
  4. Step 4: Simplify right side
    8,151.30x = 39,330,972.47
  5. Step 5: Solve for x
    x = 39,330,972.47/8,151.30
  6. Step 6: Final answer
    x = 4,825.12

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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.