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Finding the Fourth Proportional to 2,998.83, 4,138.39 and 1,672.55

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Solution

The fourth proportional to 2,998.83, 4,138.39 and 1,672.55 is: 2,308.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.83 : 4,138.39 = 1,672.55 : x
  2. Step 2: Convert to fraction form
    2,998.83/4,138.39 = 1,672.55/x
  3. Step 3: Cross multiply
    2,998.83x = 4,138.39 × 1,672.55
  4. Step 4: Simplify right side
    2,998.83x = 6,921,664.19
  5. Step 5: Solve for x
    x = 6,921,664.19/2,998.83
  6. Step 6: Final answer
    x = 2,308.12

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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.