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Finding the Fourth Proportional to 3,993.18, 5,511.24 and 3,047.18

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Solution

The fourth proportional to 3,993.18, 5,511.24 and 3,047.18 is: 4,205.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.18 : 5,511.24 = 3,047.18 : x
  2. Step 2: Convert to fraction form
    3,993.18/5,511.24 = 3,047.18/x
  3. Step 3: Cross multiply
    3,993.18x = 5,511.24 × 3,047.18
  4. Step 4: Simplify right side
    3,993.18x = 16,793,740.30
  5. Step 5: Solve for x
    x = 16,793,740.30/3,993.18
  6. Step 6: Final answer
    x = 4,205.61

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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.