Home / 2,205-5,409

Finding the Third Proportional to 2,205 and 5,409

Calculator

Solution

The third proportional to 2,205 and 5,409 is: 13,268.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205 : 5,409 = 5,409 : x
  2. Step 2: Convert to fraction form
    2,205/5,409 = 5,409/x
  3. Step 3: Cross multiply
    2,205x = 5,409 × 5,409
  4. Step 4: Simplify right side
    2,205x = 29,257,281
  5. Step 5: Solve for x
    x = 29,257,281/2,205
  6. Step 6: Final answer
    x = 13,268.61

Related Problems

Find third proportional to 1,102.50 and 2,704.50
Half scale
Find third proportional to 4,410 and 10,818
Double scale
Find third proportional to 2,207 and 5,414
Similar ratio
Find third proportional to 3,307.50 and 8,113.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.