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Finding the Fourth Proportional to 9,305.22, 12,839.16 and 5,529.62

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Solution

The fourth proportional to 9,305.22, 12,839.16 and 5,529.62 is: 7,629.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,305.22 : 12,839.16 = 5,529.62 : x
  2. Step 2: Convert to fraction form
    9,305.22/12,839.16 = 5,529.62/x
  3. Step 3: Cross multiply
    9,305.22x = 12,839.16 × 5,529.62
  4. Step 4: Simplify right side
    9,305.22x = 70,995,675.92
  5. Step 5: Solve for x
    x = 70,995,675.92/9,305.22
  6. Step 6: Final answer
    x = 7,629.66

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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.