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Finding the Fourth Proportional to 8,786.74, 13,172.67 and 3,852.64

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Solution

The fourth proportional to 8,786.74, 13,172.67 and 3,852.64 is: 5,775.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.74 : 13,172.67 = 3,852.64 : x
  2. Step 2: Convert to fraction form
    8,786.74/13,172.67 = 3,852.64/x
  3. Step 3: Cross multiply
    8,786.74x = 13,172.67 × 3,852.64
  4. Step 4: Simplify right side
    8,786.74x = 50,749,555.35
  5. Step 5: Solve for x
    x = 50,749,555.35/8,786.74
  6. Step 6: Final answer
    x = 5,775.70

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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.