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Finding the Fourth Proportional to 1,596.44, 2,391.78 and 911

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Solution

The fourth proportional to 1,596.44, 2,391.78 and 911 is: 1,364.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,596.44 : 2,391.78 = 911 : x
  2. Step 2: Convert to fraction form
    1,596.44/2,391.78 = 911/x
  3. Step 3: Cross multiply
    1,596.44x = 2,391.78 × 911
  4. Step 4: Simplify right side
    1,596.44x = 2,178,911.58
  5. Step 5: Solve for x
    x = 2,178,911.58/1,596.44
  6. Step 6: Final answer
    x = 1,364.86

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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.