Home / 3,103.06-4,654.80-911.80

Finding the Fourth Proportional to 3,103.06, 4,654.80 and 911.80

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Solution

The fourth proportional to 3,103.06, 4,654.80 and 911.80 is: 1,367.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.06 : 4,654.80 = 911.80 : x
  2. Step 2: Convert to fraction form
    3,103.06/4,654.80 = 911.80/x
  3. Step 3: Cross multiply
    3,103.06x = 4,654.80 × 911.80
  4. Step 4: Simplify right side
    3,103.06x = 4,244,246.64
  5. Step 5: Solve for x
    x = 4,244,246.64/3,103.06
  6. Step 6: Final answer
    x = 1,367.76

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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.