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Finding the Fourth Proportional to 3,377, 5,065.50 and 911.64

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Solution

The fourth proportional to 3,377, 5,065.50 and 911.64 is: 1,367.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,377 : 5,065.50 = 911.64 : x
  2. Step 2: Convert to fraction form
    3,377/5,065.50 = 911.64/x
  3. Step 3: Cross multiply
    3,377x = 5,065.50 × 911.64
  4. Step 4: Simplify right side
    3,377x = 4,617,912.42
  5. Step 5: Solve for x
    x = 4,617,912.42/3,377
  6. Step 6: Final answer
    x = 1,367.46

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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.