Home / 3,240-6,120

Finding the Third Proportional to 3,240 and 6,120

Calculator

Solution

The third proportional to 3,240 and 6,120 is: 11,560

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240 : 6,120 = 6,120 : x
  2. Step 2: Convert to fraction form
    3,240/6,120 = 6,120/x
  3. Step 3: Cross multiply
    3,240x = 6,120 × 6,120
  4. Step 4: Simplify right side
    3,240x = 37,454,400
  5. Step 5: Solve for x
    x = 37,454,400/3,240
  6. Step 6: Final answer
    x = 11,560

Related Problems

Find third proportional to 1,620 and 3,060
Half scale
Find third proportional to 6,480 and 12,240
Double scale
Find third proportional to 3,242 and 6,124
Similar ratio
Find third proportional to 4,860 and 9,180
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.