Home / 7,857.98-11,786.15-3,180.43

Finding the Fourth Proportional to 7,857.98, 11,786.15 and 3,180.43

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Solution

The fourth proportional to 7,857.98, 11,786.15 and 3,180.43 is: 4,770.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.98 : 11,786.15 = 3,180.43 : x
  2. Step 2: Convert to fraction form
    7,857.98/11,786.15 = 3,180.43/x
  3. Step 3: Cross multiply
    7,857.98x = 11,786.15 × 3,180.43
  4. Step 4: Simplify right side
    7,857.98x = 37,485,025.04
  5. Step 5: Solve for x
    x = 37,485,025.04/7,857.98
  6. Step 6: Final answer
    x = 4,770.31

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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.