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Finding the Fourth Proportional to 3,379.75, 5,069.60 and 914.82

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Solution

The fourth proportional to 3,379.75, 5,069.60 and 914.82 is: 1,372.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379.75 : 5,069.60 = 914.82 : x
  2. Step 2: Convert to fraction form
    3,379.75/5,069.60 = 914.82/x
  3. Step 3: Cross multiply
    3,379.75x = 5,069.60 × 914.82
  4. Step 4: Simplify right side
    3,379.75x = 4,637,786.43
  5. Step 5: Solve for x
    x = 4,637,786.43/3,379.75
  6. Step 6: Final answer
    x = 1,372.23

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1.5x scale

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.