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Finding the Fourth Proportional to 2,709.90, 3,737.88 and 1,914.39

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Solution

The fourth proportional to 2,709.90, 3,737.88 and 1,914.39 is: 2,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.90 : 3,737.88 = 1,914.39 : x
  2. Step 2: Convert to fraction form
    2,709.90/3,737.88 = 1,914.39/x
  3. Step 3: Cross multiply
    2,709.90x = 3,737.88 × 1,914.39
  4. Step 4: Simplify right side
    2,709.90x = 7,155,760.09
  5. Step 5: Solve for x
    x = 7,155,760.09/2,709.90
  6. Step 6: Final answer
    x = 2,640.60

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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.