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Finding the Fourth Proportional to 8,520.86, 12,785.07 and 3,324.98

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Solution

The fourth proportional to 8,520.86, 12,785.07 and 3,324.98 is: 4,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.86 : 12,785.07 = 3,324.98 : x
  2. Step 2: Convert to fraction form
    8,520.86/12,785.07 = 3,324.98/x
  3. Step 3: Cross multiply
    8,520.86x = 12,785.07 × 3,324.98
  4. Step 4: Simplify right side
    8,520.86x = 42,510,102.05
  5. Step 5: Solve for x
    x = 42,510,102.05/8,520.86
  6. Step 6: Final answer
    x = 4,988.95

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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.