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Finding the Fourth Proportional to 3,493.94, 4,821.65 and 1,900.60

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Solution

The fourth proportional to 3,493.94, 4,821.65 and 1,900.60 is: 2,622.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.94 : 4,821.65 = 1,900.60 : x
  2. Step 2: Convert to fraction form
    3,493.94/4,821.65 = 1,900.60/x
  3. Step 3: Cross multiply
    3,493.94x = 4,821.65 × 1,900.60
  4. Step 4: Simplify right side
    3,493.94x = 9,164,020.69
  5. Step 5: Solve for x
    x = 9,164,020.69/3,493.94
  6. Step 6: Final answer
    x = 2,622.83

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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.