Home / 11,847.78-17,767.80-3,948.60

Finding the Fourth Proportional to 11,847.78, 17,767.80 and 3,948.60

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Solution

The fourth proportional to 11,847.78, 17,767.80 and 3,948.60 is: 5,921.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,847.78 : 17,767.80 = 3,948.60 : x
  2. Step 2: Convert to fraction form
    11,847.78/17,767.80 = 3,948.60/x
  3. Step 3: Cross multiply
    11,847.78x = 17,767.80 × 3,948.60
  4. Step 4: Simplify right side
    11,847.78x = 70,157,935.08
  5. Step 5: Solve for x
    x = 70,157,935.08/11,847.78
  6. Step 6: Final answer
    x = 5,921.61

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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.