Home / 3,318-7,155

Finding the Third Proportional to 3,318 and 7,155

Calculator

Solution

The third proportional to 3,318 and 7,155 is: 15,429.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318 : 7,155 = 7,155 : x
  2. Step 2: Convert to fraction form
    3,318/7,155 = 7,155/x
  3. Step 3: Cross multiply
    3,318x = 7,155 × 7,155
  4. Step 4: Simplify right side
    3,318x = 51,194,025
  5. Step 5: Solve for x
    x = 51,194,025/3,318
  6. Step 6: Final answer
    x = 15,429.18

Related Problems

Find third proportional to 1,659 and 3,577.50
Half scale
Find third proportional to 6,636 and 14,310
Double scale
Find third proportional to 3,320 and 7,159
Similar ratio
Find third proportional to 4,977 and 10,732.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.