Home / 2,619-5,639

Finding the Third Proportional to 2,619 and 5,639

Calculator

Solution

The third proportional to 2,619 and 5,639 is: 12,141.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619 : 5,639 = 5,639 : x
  2. Step 2: Convert to fraction form
    2,619/5,639 = 5,639/x
  3. Step 3: Cross multiply
    2,619x = 5,639 × 5,639
  4. Step 4: Simplify right side
    2,619x = 31,798,321
  5. Step 5: Solve for x
    x = 31,798,321/2,619
  6. Step 6: Final answer
    x = 12,141.40

Related Problems

Find third proportional to 1,309.50 and 2,819.50
Half scale
Find third proportional to 5,238 and 11,278
Double scale
Find third proportional to 2,621 and 5,643
Similar ratio
Find third proportional to 3,928.50 and 8,458.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.