Home / 3,391.21-4,679.99-1,899.19

Finding the Fourth Proportional to 3,391.21, 4,679.99 and 1,899.19

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Solution

The fourth proportional to 3,391.21, 4,679.99 and 1,899.19 is: 2,620.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.21 : 4,679.99 = 1,899.19 : x
  2. Step 2: Convert to fraction form
    3,391.21/4,679.99 = 1,899.19/x
  3. Step 3: Cross multiply
    3,391.21x = 4,679.99 × 1,899.19
  4. Step 4: Simplify right side
    3,391.21x = 8,888,190.21
  5. Step 5: Solve for x
    x = 8,888,190.21/3,391.21
  6. Step 6: Final answer
    x = 2,620.95

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1.5x scale

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.