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Finding the Fourth Proportional to 7,992.44, 11,034.30 and 7,105.79

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Solution

The fourth proportional to 7,992.44, 11,034.30 and 7,105.79 is: 9,810.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.44 : 11,034.30 = 7,105.79 : x
  2. Step 2: Convert to fraction form
    7,992.44/11,034.30 = 7,105.79/x
  3. Step 3: Cross multiply
    7,992.44x = 11,034.30 × 7,105.79
  4. Step 4: Simplify right side
    7,992.44x = 78,407,383.07
  5. Step 5: Solve for x
    x = 78,407,383.07/7,992.44
  6. Step 6: Final answer
    x = 9,810.19

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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.