Home / 1,392-2,101

Finding the Third Proportional to 1,392 and 2,101

Calculator

Solution

The third proportional to 1,392 and 2,101 is: 3,171.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392 : 2,101 = 2,101 : x
  2. Step 2: Convert to fraction form
    1,392/2,101 = 2,101/x
  3. Step 3: Cross multiply
    1,392x = 2,101 × 2,101
  4. Step 4: Simplify right side
    1,392x = 4,414,201
  5. Step 5: Solve for x
    x = 4,414,201/1,392
  6. Step 6: Final answer
    x = 3,171.12

Related Problems

Find third proportional to 696 and 1,050.50
Half scale
Find third proportional to 2,784 and 4,202
Double scale
Find third proportional to 1,394 and 2,104
Similar ratio
Find third proportional to 2,088 and 3,151.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.