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Finding the Fourth Proportional to 3,783.97, 5,221.42 and 2,104.98

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Solution

The fourth proportional to 3,783.97, 5,221.42 and 2,104.98 is: 2,904.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.97 : 5,221.42 = 2,104.98 : x
  2. Step 2: Convert to fraction form
    3,783.97/5,221.42 = 2,104.98/x
  3. Step 3: Cross multiply
    3,783.97x = 5,221.42 × 2,104.98
  4. Step 4: Simplify right side
    3,783.97x = 10,990,984.67
  5. Step 5: Solve for x
    x = 10,990,984.67/3,783.97
  6. Step 6: Final answer
    x = 2,904.62

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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.