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Finding the Fourth Proportional to 3,163.46, 4,365.97 and 1,905.17

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Solution

The fourth proportional to 3,163.46, 4,365.97 and 1,905.17 is: 2,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.46 : 4,365.97 = 1,905.17 : x
  2. Step 2: Convert to fraction form
    3,163.46/4,365.97 = 1,905.17/x
  3. Step 3: Cross multiply
    3,163.46x = 4,365.97 × 1,905.17
  4. Step 4: Simplify right side
    3,163.46x = 8,317,888.47
  5. Step 5: Solve for x
    x = 8,317,888.47/3,163.46
  6. Step 6: Final answer
    x = 2,629.37

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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.