Home / 3,103.04-4,655.27-911.79

Finding the Fourth Proportional to 3,103.04, 4,655.27 and 911.79

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Solution

The fourth proportional to 3,103.04, 4,655.27 and 911.79 is: 1,367.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.04 : 4,655.27 = 911.79 : x
  2. Step 2: Convert to fraction form
    3,103.04/4,655.27 = 911.79/x
  3. Step 3: Cross multiply
    3,103.04x = 4,655.27 × 911.79
  4. Step 4: Simplify right side
    3,103.04x = 4,244,630.91
  5. Step 5: Solve for x
    x = 4,244,630.91/3,103.04
  6. Step 6: Final answer
    x = 1,367.89

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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.