Home / 7,860.88-11,791.16-3,179.60

Finding the Fourth Proportional to 7,860.88, 11,791.16 and 3,179.60

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Solution

The fourth proportional to 7,860.88, 11,791.16 and 3,179.60 is: 4,769.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.88 : 11,791.16 = 3,179.60 : x
  2. Step 2: Convert to fraction form
    7,860.88/11,791.16 = 3,179.60/x
  3. Step 3: Cross multiply
    7,860.88x = 11,791.16 × 3,179.60
  4. Step 4: Simplify right side
    7,860.88x = 37,491,172.34
  5. Step 5: Solve for x
    x = 37,491,172.34/7,860.88
  6. Step 6: Final answer
    x = 4,769.34

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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.