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Finding the Fourth Proportional to 3,018.68, 4,521.94 and 1,919.11

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Solution

The fourth proportional to 3,018.68, 4,521.94 and 1,919.11 is: 2,874.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.68 : 4,521.94 = 1,919.11 : x
  2. Step 2: Convert to fraction form
    3,018.68/4,521.94 = 1,919.11/x
  3. Step 3: Cross multiply
    3,018.68x = 4,521.94 × 1,919.11
  4. Step 4: Simplify right side
    3,018.68x = 8,678,103.44
  5. Step 5: Solve for x
    x = 8,678,103.44/3,018.68
  6. Step 6: Final answer
    x = 2,874.80

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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.