Home / 11,788.28-17,678.64-3,889.03

Finding the Fourth Proportional to 11,788.28, 17,678.64 and 3,889.03

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Solution

The fourth proportional to 11,788.28, 17,678.64 and 3,889.03 is: 5,832.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,788.28 : 17,678.64 = 3,889.03 : x
  2. Step 2: Convert to fraction form
    11,788.28/17,678.64 = 3,889.03/x
  3. Step 3: Cross multiply
    11,788.28x = 17,678.64 × 3,889.03
  4. Step 4: Simplify right side
    11,788.28x = 68,752,672.93
  5. Step 5: Solve for x
    x = 68,752,672.93/11,788.28
  6. Step 6: Final answer
    x = 5,832.29

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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.