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Finding the Fourth Proportional to 6,992.78, 9,629.22 and 6,837.56

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Solution

The fourth proportional to 6,992.78, 9,629.22 and 6,837.56 is: 9,415.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,992.78 : 9,629.22 = 6,837.56 : x
  2. Step 2: Convert to fraction form
    6,992.78/9,629.22 = 6,837.56/x
  3. Step 3: Cross multiply
    6,992.78x = 9,629.22 × 6,837.56
  4. Step 4: Simplify right side
    6,992.78x = 65,840,369.50
  5. Step 5: Solve for x
    x = 65,840,369.50/6,992.78
  6. Step 6: Final answer
    x = 9,415.48

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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.