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Finding the Fourth Proportional to 11,786.60, 17,679.90 and 3,022.20

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Solution

The fourth proportional to 11,786.60, 17,679.90 and 3,022.20 is: 4,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,786.60 : 17,679.90 = 3,022.20 : x
  2. Step 2: Convert to fraction form
    11,786.60/17,679.90 = 3,022.20/x
  3. Step 3: Cross multiply
    11,786.60x = 17,679.90 × 3,022.20
  4. Step 4: Simplify right side
    11,786.60x = 53,432,193.78
  5. Step 5: Solve for x
    x = 53,432,193.78/11,786.60
  6. Step 6: Final answer
    x = 4,533.30

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1.5x scale

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.