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Finding the Fourth Proportional to 2,685.65, 4,028.49 and 737.87

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Solution

The fourth proportional to 2,685.65, 4,028.49 and 737.87 is: 1,106.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.65 : 4,028.49 = 737.87 : x
  2. Step 2: Convert to fraction form
    2,685.65/4,028.49 = 737.87/x
  3. Step 3: Cross multiply
    2,685.65x = 4,028.49 × 737.87
  4. Step 4: Simplify right side
    2,685.65x = 2,972,481.77
  5. Step 5: Solve for x
    x = 2,972,481.77/2,685.65
  6. Step 6: Final answer
    x = 1,106.80

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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.