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Finding the Fourth Proportional to 3,699.92, 5,539.09 and 1,940.75

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Solution

The fourth proportional to 3,699.92, 5,539.09 and 1,940.75 is: 2,905.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.92 : 5,539.09 = 1,940.75 : x
  2. Step 2: Convert to fraction form
    3,699.92/5,539.09 = 1,940.75/x
  3. Step 3: Cross multiply
    3,699.92x = 5,539.09 × 1,940.75
  4. Step 4: Simplify right side
    3,699.92x = 10,749,988.92
  5. Step 5: Solve for x
    x = 10,749,988.92/3,699.92
  6. Step 6: Final answer
    x = 2,905.47

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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.