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Finding the Fourth Proportional to 8,786.03, 13,180.80 and 3,239.40

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Solution

The fourth proportional to 8,786.03, 13,180.80 and 3,239.40 is: 4,859.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.03 : 13,180.80 = 3,239.40 : x
  2. Step 2: Convert to fraction form
    8,786.03/13,180.80 = 3,239.40/x
  3. Step 3: Cross multiply
    8,786.03x = 13,180.80 × 3,239.40
  4. Step 4: Simplify right side
    8,786.03x = 42,697,883.52
  5. Step 5: Solve for x
    x = 42,697,883.52/8,786.03
  6. Step 6: Final answer
    x = 4,859.75

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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.