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Finding the Fourth Proportional to 8,520.10, 12,763.73 and 6,961.86

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Solution

The fourth proportional to 8,520.10, 12,763.73 and 6,961.86 is: 10,429.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.10 : 12,763.73 = 6,961.86 : x
  2. Step 2: Convert to fraction form
    8,520.10/12,763.73 = 6,961.86/x
  3. Step 3: Cross multiply
    8,520.10x = 12,763.73 × 6,961.86
  4. Step 4: Simplify right side
    8,520.10x = 88,859,318.74
  5. Step 5: Solve for x
    x = 88,859,318.74/8,520.10
  6. Step 6: Final answer
    x = 10,429.38

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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.