Home / 7,992.12-11,028.96-4,455.12

Finding the Fourth Proportional to 7,992.12, 11,028.96 and 4,455.12

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Solution

The fourth proportional to 7,992.12, 11,028.96 and 4,455.12 is: 6,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.12 : 11,028.96 = 4,455.12 : x
  2. Step 2: Convert to fraction form
    7,992.12/11,028.96 = 4,455.12/x
  3. Step 3: Cross multiply
    7,992.12x = 11,028.96 × 4,455.12
  4. Step 4: Simplify right side
    7,992.12x = 49,135,340.28
  5. Step 5: Solve for x
    x = 49,135,340.28/7,992.12
  6. Step 6: Final answer
    x = 6,147.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.