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Finding the Fourth Proportional to 8,980.88, 13,476.78 and 3,786.75

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Solution

The fourth proportional to 8,980.88, 13,476.78 and 3,786.75 is: 5,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.88 : 13,476.78 = 3,786.75 : x
  2. Step 2: Convert to fraction form
    8,980.88/13,476.78 = 3,786.75/x
  3. Step 3: Cross multiply
    8,980.88x = 13,476.78 × 3,786.75
  4. Step 4: Simplify right side
    8,980.88x = 51,033,196.67
  5. Step 5: Solve for x
    x = 51,033,196.67/8,980.88
  6. Step 6: Final answer
    x = 5,682.43

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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.