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Finding the Fourth Proportional to 9,475.08, 12,998.44 and 8,909.68

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Solution

The fourth proportional to 9,475.08, 12,998.44 and 8,909.68 is: 12,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,475.08 : 12,998.44 = 8,909.68 : x
  2. Step 2: Convert to fraction form
    9,475.08/12,998.44 = 8,909.68/x
  3. Step 3: Cross multiply
    9,475.08x = 12,998.44 × 8,909.68
  4. Step 4: Simplify right side
    9,475.08x = 115,811,940.90
  5. Step 5: Solve for x
    x = 115,811,940.90/9,475.08
  6. Step 6: Final answer
    x = 12,222.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.