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Finding the Fourth Proportional to 3,105.46, 4,656.60 and 996.79

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Solution

The fourth proportional to 3,105.46, 4,656.60 and 996.79 is: 1,494.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.46 : 4,656.60 = 996.79 : x
  2. Step 2: Convert to fraction form
    3,105.46/4,656.60 = 996.79/x
  3. Step 3: Cross multiply
    3,105.46x = 4,656.60 × 996.79
  4. Step 4: Simplify right side
    3,105.46x = 4,641,652.31
  5. Step 5: Solve for x
    x = 4,641,652.31/3,105.46
  6. Step 6: Final answer
    x = 1,494.67

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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.