Home / 1,611-2,131

Finding the Third Proportional to 1,611 and 2,131

Calculator

Solution

The third proportional to 1,611 and 2,131 is: 2,818.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611 : 2,131 = 2,131 : x
  2. Step 2: Convert to fraction form
    1,611/2,131 = 2,131/x
  3. Step 3: Cross multiply
    1,611x = 2,131 × 2,131
  4. Step 4: Simplify right side
    1,611x = 4,541,161
  5. Step 5: Solve for x
    x = 4,541,161/1,611
  6. Step 6: Final answer
    x = 2,818.85

Related Problems

Find third proportional to 805.50 and 1,065.50
Half scale
Find third proportional to 3,222 and 4,262
Double scale
Find third proportional to 1,613 and 2,134
Similar ratio
Find third proportional to 2,416.50 and 3,196.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.