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Finding the Fourth Proportional to 3,289.12, 4,910.12 and 3,049.12

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Solution

The fourth proportional to 3,289.12, 4,910.12 and 3,049.12 is: 4,551.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.12 : 4,910.12 = 3,049.12 : x
  2. Step 2: Convert to fraction form
    3,289.12/4,910.12 = 3,049.12/x
  3. Step 3: Cross multiply
    3,289.12x = 4,910.12 × 3,049.12
  4. Step 4: Simplify right side
    3,289.12x = 14,971,545.09
  5. Step 5: Solve for x
    x = 14,971,545.09/3,289.12
  6. Step 6: Final answer
    x = 4,551.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.