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Finding the Fourth Proportional to 9,279.28, 13,918.92 and 7,630.83

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Solution

The fourth proportional to 9,279.28, 13,918.92 and 7,630.83 is: 11,446.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.28 : 13,918.92 = 7,630.83 : x
  2. Step 2: Convert to fraction form
    9,279.28/13,918.92 = 7,630.83/x
  3. Step 3: Cross multiply
    9,279.28x = 13,918.92 × 7,630.83
  4. Step 4: Simplify right side
    9,279.28x = 106,212,912.30
  5. Step 5: Solve for x
    x = 106,212,912.30/9,279.28
  6. Step 6: Final answer
    x = 11,446.25

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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.