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Finding the Fourth Proportional to 7,999.63, 11,999.39 and 6,246.09

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Solution

The fourth proportional to 7,999.63, 11,999.39 and 6,246.09 is: 9,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.63 : 11,999.39 = 6,246.09 : x
  2. Step 2: Convert to fraction form
    7,999.63/11,999.39 = 6,246.09/x
  3. Step 3: Cross multiply
    7,999.63x = 11,999.39 × 6,246.09
  4. Step 4: Simplify right side
    7,999.63x = 74,949,238.65
  5. Step 5: Solve for x
    x = 74,949,238.65/7,999.63
  6. Step 6: Final answer
    x = 9,369.09

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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.