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Finding the Fourth Proportional to 3,240.63, 4,469.99 and 1,914.26

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Solution

The fourth proportional to 3,240.63, 4,469.99 and 1,914.26 is: 2,640.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.63 : 4,469.99 = 1,914.26 : x
  2. Step 2: Convert to fraction form
    3,240.63/4,469.99 = 1,914.26/x
  3. Step 3: Cross multiply
    3,240.63x = 4,469.99 × 1,914.26
  4. Step 4: Simplify right side
    3,240.63x = 8,556,691.14
  5. Step 5: Solve for x
    x = 8,556,691.14/3,240.63
  6. Step 6: Final answer
    x = 2,640.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.