Home / 3,103.12-4,655.33-911.66

Finding the Fourth Proportional to 3,103.12, 4,655.33 and 911.66

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Solution

The fourth proportional to 3,103.12, 4,655.33 and 911.66 is: 1,367.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.12 : 4,655.33 = 911.66 : x
  2. Step 2: Convert to fraction form
    3,103.12/4,655.33 = 911.66/x
  3. Step 3: Cross multiply
    3,103.12x = 4,655.33 × 911.66
  4. Step 4: Simplify right side
    3,103.12x = 4,244,073.59
  5. Step 5: Solve for x
    x = 4,244,073.59/3,103.12
  6. Step 6: Final answer
    x = 1,367.68

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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.