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Finding the Fourth Proportional to 11,187.51, 16,770.79 and 3,786.79

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Solution

The fourth proportional to 11,187.51, 16,770.79 and 3,786.79 is: 5,676.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.51 : 16,770.79 = 3,786.79 : x
  2. Step 2: Convert to fraction form
    11,187.51/16,770.79 = 3,786.79/x
  3. Step 3: Cross multiply
    11,187.51x = 16,770.79 × 3,786.79
  4. Step 4: Simplify right side
    11,187.51x = 63,507,440.93
  5. Step 5: Solve for x
    x = 63,507,440.93/11,187.51
  6. Step 6: Final answer
    x = 5,676.64

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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.