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Finding the Fourth Proportional to 7,999.75, 11,040.87 and 4,855.33

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Solution

The fourth proportional to 7,999.75, 11,040.87 and 4,855.33 is: 6,701.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.75 : 11,040.87 = 4,855.33 : x
  2. Step 2: Convert to fraction form
    7,999.75/11,040.87 = 4,855.33/x
  3. Step 3: Cross multiply
    7,999.75x = 11,040.87 × 4,855.33
  4. Step 4: Simplify right side
    7,999.75x = 53,607,067.34
  5. Step 5: Solve for x
    x = 53,607,067.34/7,999.75
  6. Step 6: Final answer
    x = 6,701.09

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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.