Home / 11,788.78-17,682.74-3,997.60

Finding the Fourth Proportional to 11,788.78, 17,682.74 and 3,997.60

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Solution

The fourth proportional to 11,788.78, 17,682.74 and 3,997.60 is: 5,996.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,788.78 : 17,682.74 = 3,997.60 : x
  2. Step 2: Convert to fraction form
    11,788.78/17,682.74 = 3,997.60/x
  3. Step 3: Cross multiply
    11,788.78x = 17,682.74 × 3,997.60
  4. Step 4: Simplify right side
    11,788.78x = 70,688,521.42
  5. Step 5: Solve for x
    x = 70,688,521.42/11,788.78
  6. Step 6: Final answer
    x = 5,996.25

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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.