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Finding the Fourth Proportional to 2,163.42, 3,237.84 and 1,338.84

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Solution

The fourth proportional to 2,163.42, 3,237.84 and 1,338.84 is: 2,003.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.42 : 3,237.84 = 1,338.84 : x
  2. Step 2: Convert to fraction form
    2,163.42/3,237.84 = 1,338.84/x
  3. Step 3: Cross multiply
    2,163.42x = 3,237.84 × 1,338.84
  4. Step 4: Simplify right side
    2,163.42x = 4,334,949.71
  5. Step 5: Solve for x
    x = 4,334,949.71/2,163.42
  6. Step 6: Final answer
    x = 2,003.75

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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.