Home / 3,391.50-4,680.43-1,899.12

Finding the Fourth Proportional to 3,391.50, 4,680.43 and 1,899.12

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Solution

The fourth proportional to 3,391.50, 4,680.43 and 1,899.12 is: 2,620.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.50 : 4,680.43 = 1,899.12 : x
  2. Step 2: Convert to fraction form
    3,391.50/4,680.43 = 1,899.12/x
  3. Step 3: Cross multiply
    3,391.50x = 4,680.43 × 1,899.12
  4. Step 4: Simplify right side
    3,391.50x = 8,888,698.22
  5. Step 5: Solve for x
    x = 8,888,698.22/3,391.50
  6. Step 6: Final answer
    x = 2,620.88

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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.