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Finding the Fourth Proportional to 2,998.78, 4,495.28 and 1,900.42

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Solution

The fourth proportional to 2,998.78, 4,495.28 and 1,900.42 is: 2,848.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.78 : 4,495.28 = 1,900.42 : x
  2. Step 2: Convert to fraction form
    2,998.78/4,495.28 = 1,900.42/x
  3. Step 3: Cross multiply
    2,998.78x = 4,495.28 × 1,900.42
  4. Step 4: Simplify right side
    2,998.78x = 8,542,920.02
  5. Step 5: Solve for x
    x = 8,542,920.02/2,998.78
  6. Step 6: Final answer
    x = 2,848.80

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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.