Home / 3,391.45-4,679.71-1,899.43

Finding the Fourth Proportional to 3,391.45, 4,679.71 and 1,899.43

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Solution

The fourth proportional to 3,391.45, 4,679.71 and 1,899.43 is: 2,620.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.45 : 4,679.71 = 1,899.43 : x
  2. Step 2: Convert to fraction form
    3,391.45/4,679.71 = 1,899.43/x
  3. Step 3: Cross multiply
    3,391.45x = 4,679.71 × 1,899.43
  4. Step 4: Simplify right side
    3,391.45x = 8,888,781.57
  5. Step 5: Solve for x
    x = 8,888,781.57/3,391.45
  6. Step 6: Final answer
    x = 2,620.94

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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.