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Finding the Fourth Proportional to 8,586.81, 12,883.86 and 2,745.09

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Solution

The fourth proportional to 8,586.81, 12,883.86 and 2,745.09 is: 4,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.81 : 12,883.86 = 2,745.09 : x
  2. Step 2: Convert to fraction form
    8,586.81/12,883.86 = 2,745.09/x
  3. Step 3: Cross multiply
    8,586.81x = 12,883.86 × 2,745.09
  4. Step 4: Simplify right side
    8,586.81x = 35,367,355.25
  5. Step 5: Solve for x
    x = 35,367,355.25/8,586.81
  6. Step 6: Final answer
    x = 4,118.80

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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.