Home / 3,300-3,900

Finding the Third Proportional to 3,300 and 3,900

Calculator

Solution

The third proportional to 3,300 and 3,900 is: 4,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,300 : 3,900 = 3,900 : x
  2. Step 2: Convert to fraction form
    3,300/3,900 = 3,900/x
  3. Step 3: Cross multiply
    3,300x = 3,900 × 3,900
  4. Step 4: Simplify right side
    3,300x = 15,210,000
  5. Step 5: Solve for x
    x = 15,210,000/3,300
  6. Step 6: Final answer
    x = 4,609.09

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.