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Finding the Fourth Proportional to 7,999.11, 11,998.26 and 7,758.54

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Solution

The fourth proportional to 7,999.11, 11,998.26 and 7,758.54 is: 11,637.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.11 : 11,998.26 = 7,758.54 : x
  2. Step 2: Convert to fraction form
    7,999.11/11,998.26 = 7,758.54/x
  3. Step 3: Cross multiply
    7,999.11x = 11,998.26 × 7,758.54
  4. Step 4: Simplify right side
    7,999.11x = 93,088,980.14
  5. Step 5: Solve for x
    x = 93,088,980.14/7,999.11
  6. Step 6: Final answer
    x = 11,637.42

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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.