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Finding the Fourth Proportional to 8,694.90, 11,999.03 and 5,109.99

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Solution

The fourth proportional to 8,694.90, 11,999.03 and 5,109.99 is: 7,051.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.90 : 11,999.03 = 5,109.99 : x
  2. Step 2: Convert to fraction form
    8,694.90/11,999.03 = 5,109.99/x
  3. Step 3: Cross multiply
    8,694.90x = 11,999.03 × 5,109.99
  4. Step 4: Simplify right side
    8,694.90x = 61,314,923.31
  5. Step 5: Solve for x
    x = 61,314,923.31/8,694.90
  6. Step 6: Final answer
    x = 7,051.83

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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.