Home / 7,858.20-11,786.90-2,664.12

Finding the Fourth Proportional to 7,858.20, 11,786.90 and 2,664.12

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Solution

The fourth proportional to 7,858.20, 11,786.90 and 2,664.12 is: 3,996.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.20 : 11,786.90 = 2,664.12 : x
  2. Step 2: Convert to fraction form
    7,858.20/11,786.90 = 2,664.12/x
  3. Step 3: Cross multiply
    7,858.20x = 11,786.90 × 2,664.12
  4. Step 4: Simplify right side
    7,858.20x = 31,401,716.03
  5. Step 5: Solve for x
    x = 31,401,716.03/7,858.20
  6. Step 6: Final answer
    x = 3,996.04

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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.