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Finding the Fourth Proportional to 8,515.09, 11,752.46 and 4,789.09

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Solution

The fourth proportional to 8,515.09, 11,752.46 and 4,789.09 is: 6,609.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.09 : 11,752.46 = 4,789.09 : x
  2. Step 2: Convert to fraction form
    8,515.09/11,752.46 = 4,789.09/x
  3. Step 3: Cross multiply
    8,515.09x = 11,752.46 × 4,789.09
  4. Step 4: Simplify right side
    8,515.09x = 56,283,588.66
  5. Step 5: Solve for x
    x = 56,283,588.66/8,515.09
  6. Step 6: Final answer
    x = 6,609.86

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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.