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Finding the Fourth Proportional to 9,079.82, 13,619.73 and 7,939.34

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Solution

The fourth proportional to 9,079.82, 13,619.73 and 7,939.34 is: 11,909.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,079.82 : 13,619.73 = 7,939.34 : x
  2. Step 2: Convert to fraction form
    9,079.82/13,619.73 = 7,939.34/x
  3. Step 3: Cross multiply
    9,079.82x = 13,619.73 × 7,939.34
  4. Step 4: Simplify right side
    9,079.82x = 108,131,667.18
  5. Step 5: Solve for x
    x = 108,131,667.18/9,079.82
  6. Step 6: Final answer
    x = 11,909.01

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Similar ratio
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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.