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Finding the Fourth Proportional to 8,666.76, 11,960.09 and 4,687.87

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Solution

The fourth proportional to 8,666.76, 11,960.09 and 4,687.87 is: 6,469.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.76 : 11,960.09 = 4,687.87 : x
  2. Step 2: Convert to fraction form
    8,666.76/11,960.09 = 4,687.87/x
  3. Step 3: Cross multiply
    8,666.76x = 11,960.09 × 4,687.87
  4. Step 4: Simplify right side
    8,666.76x = 56,067,328.93
  5. Step 5: Solve for x
    x = 56,067,328.93/8,666.76
  6. Step 6: Final answer
    x = 6,469.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.