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Finding the Fourth Proportional to 2,998.98, 4,138.58 and 1,672.62

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Solution

The fourth proportional to 2,998.98, 4,138.58 and 1,672.62 is: 2,308.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.98 : 4,138.58 = 1,672.62 : x
  2. Step 2: Convert to fraction form
    2,998.98/4,138.58 = 1,672.62/x
  3. Step 3: Cross multiply
    2,998.98x = 4,138.58 × 1,672.62
  4. Step 4: Simplify right side
    2,998.98x = 6,922,271.68
  5. Step 5: Solve for x
    x = 6,922,271.68/2,998.98
  6. Step 6: Final answer
    x = 2,308.21

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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.