Home / 3,450.63-5,176.96-1,990.83

Finding the Fourth Proportional to 3,450.63, 5,176.96 and 1,990.83

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Solution

The fourth proportional to 3,450.63, 5,176.96 and 1,990.83 is: 2,986.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,450.63 : 5,176.96 = 1,990.83 : x
  2. Step 2: Convert to fraction form
    3,450.63/5,176.96 = 1,990.83/x
  3. Step 3: Cross multiply
    3,450.63x = 5,176.96 × 1,990.83
  4. Step 4: Simplify right side
    3,450.63x = 10,306,447.28
  5. Step 5: Solve for x
    x = 10,306,447.28/3,450.63
  6. Step 6: Final answer
    x = 2,986.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.