Home / 7,122-11,172

Finding the Third Proportional to 7,122 and 11,172

Calculator

Solution

The third proportional to 7,122 and 11,172 is: 17,525.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122 : 11,172 = 11,172 : x
  2. Step 2: Convert to fraction form
    7,122/11,172 = 11,172/x
  3. Step 3: Cross multiply
    7,122x = 11,172 × 11,172
  4. Step 4: Simplify right side
    7,122x = 124,813,584
  5. Step 5: Solve for x
    x = 124,813,584/7,122
  6. Step 6: Final answer
    x = 17,525.07

Related Problems

Find third proportional to 3,561 and 5,586
Half scale
Find third proportional to 14,244 and 22,344
Double scale
Find third proportional to 7,124 and 11,175
Similar ratio
Find third proportional to 10,683 and 16,758
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.