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Finding the Fourth Proportional to 6,906.78, 9,531.09 and 3,762.99

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Solution

The fourth proportional to 6,906.78, 9,531.09 and 3,762.99 is: 5,192.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,906.78 : 9,531.09 = 3,762.99 : x
  2. Step 2: Convert to fraction form
    6,906.78/9,531.09 = 3,762.99/x
  3. Step 3: Cross multiply
    6,906.78x = 9,531.09 × 3,762.99
  4. Step 4: Simplify right side
    6,906.78x = 35,865,396.36
  5. Step 5: Solve for x
    x = 35,865,396.36/6,906.78
  6. Step 6: Final answer
    x = 5,192.78

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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.