Home / 1,919.78-2,879.64-1,095.98

Finding the Fourth Proportional to 1,919.78, 2,879.64 and 1,095.98

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Solution

The fourth proportional to 1,919.78, 2,879.64 and 1,095.98 is: 1,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.78 : 2,879.64 = 1,095.98 : x
  2. Step 2: Convert to fraction form
    1,919.78/2,879.64 = 1,095.98/x
  3. Step 3: Cross multiply
    1,919.78x = 2,879.64 × 1,095.98
  4. Step 4: Simplify right side
    1,919.78x = 3,156,027.85
  5. Step 5: Solve for x
    x = 3,156,027.85/1,919.78
  6. Step 6: Final answer
    x = 1,643.95

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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.