Home / 3,401.55-4,694.13-1,986.21

Finding the Fourth Proportional to 3,401.55, 4,694.13 and 1,986.21

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Solution

The fourth proportional to 3,401.55, 4,694.13 and 1,986.21 is: 2,740.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,401.55 : 4,694.13 = 1,986.21 : x
  2. Step 2: Convert to fraction form
    3,401.55/4,694.13 = 1,986.21/x
  3. Step 3: Cross multiply
    3,401.55x = 4,694.13 × 1,986.21
  4. Step 4: Simplify right side
    3,401.55x = 9,323,527.95
  5. Step 5: Solve for x
    x = 9,323,527.95/3,401.55
  6. Step 6: Final answer
    x = 2,740.96

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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.