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Finding the Fourth Proportional to 8,440.46, 12,660.89 and 2,893.76

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Solution

The fourth proportional to 8,440.46, 12,660.89 and 2,893.76 is: 4,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,440.46 : 12,660.89 = 2,893.76 : x
  2. Step 2: Convert to fraction form
    8,440.46/12,660.89 = 2,893.76/x
  3. Step 3: Cross multiply
    8,440.46x = 12,660.89 × 2,893.76
  4. Step 4: Simplify right side
    8,440.46x = 36,637,615.93
  5. Step 5: Solve for x
    x = 36,637,615.93/8,440.46
  6. Step 6: Final answer
    x = 4,340.71

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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.