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Finding the Fourth Proportional to 2,489.94, 3,737.34 and 1,838.70

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Solution

The fourth proportional to 2,489.94, 3,737.34 and 1,838.70 is: 2,759.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.94 : 3,737.34 = 1,838.70 : x
  2. Step 2: Convert to fraction form
    2,489.94/3,737.34 = 1,838.70/x
  3. Step 3: Cross multiply
    2,489.94x = 3,737.34 × 1,838.70
  4. Step 4: Simplify right side
    2,489.94x = 6,871,847.06
  5. Step 5: Solve for x
    x = 6,871,847.06/2,489.94
  6. Step 6: Final answer
    x = 2,759.84

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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.