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Finding the Fourth Proportional to 8,154.72, 12,230.64 and 3,222.72

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Solution

The fourth proportional to 8,154.72, 12,230.64 and 3,222.72 is: 4,833.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,154.72 : 12,230.64 = 3,222.72 : x
  2. Step 2: Convert to fraction form
    8,154.72/12,230.64 = 3,222.72/x
  3. Step 3: Cross multiply
    8,154.72x = 12,230.64 × 3,222.72
  4. Step 4: Simplify right side
    8,154.72x = 39,415,928.14
  5. Step 5: Solve for x
    x = 39,415,928.14/8,154.72
  6. Step 6: Final answer
    x = 4,833.51

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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.