Home / 3,401.55-4,694.19-1,909.80

Finding the Fourth Proportional to 3,401.55, 4,694.19 and 1,909.80

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Solution

The fourth proportional to 3,401.55, 4,694.19 and 1,909.80 is: 2,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,401.55 : 4,694.19 = 1,909.80 : x
  2. Step 2: Convert to fraction form
    3,401.55/4,694.19 = 1,909.80/x
  3. Step 3: Cross multiply
    3,401.55x = 4,694.19 × 1,909.80
  4. Step 4: Simplify right side
    3,401.55x = 8,964,964.06
  5. Step 5: Solve for x
    x = 8,964,964.06/3,401.55
  6. Step 6: Final answer
    x = 2,635.55

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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.