Home / 4,261.30-6,390.69-1,919.95

Finding the Fourth Proportional to 4,261.30, 6,390.69 and 1,919.95

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Solution

The fourth proportional to 4,261.30, 6,390.69 and 1,919.95 is: 2,879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,261.30 : 6,390.69 = 1,919.95 : x
  2. Step 2: Convert to fraction form
    4,261.30/6,390.69 = 1,919.95/x
  3. Step 3: Cross multiply
    4,261.30x = 6,390.69 × 1,919.95
  4. Step 4: Simplify right side
    4,261.30x = 12,269,805.27
  5. Step 5: Solve for x
    x = 12,269,805.27/4,261.30
  6. Step 6: Final answer
    x = 2,879.36

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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.