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Finding the Fourth Proportional to 2,998.35, 4,137.62 and 1,879.89

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Solution

The fourth proportional to 2,998.35, 4,137.62 and 1,879.89 is: 2,594.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.35 : 4,137.62 = 1,879.89 : x
  2. Step 2: Convert to fraction form
    2,998.35/4,137.62 = 1,879.89/x
  3. Step 3: Cross multiply
    2,998.35x = 4,137.62 × 1,879.89
  4. Step 4: Simplify right side
    2,998.35x = 7,778,270.46
  5. Step 5: Solve for x
    x = 7,778,270.46/2,998.35
  6. Step 6: Final answer
    x = 2,594.18

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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.