Home / 1,213-2,785

Finding the Third Proportional to 1,213 and 2,785

Calculator

Solution

The third proportional to 1,213 and 2,785 is: 6,394.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213 : 2,785 = 2,785 : x
  2. Step 2: Convert to fraction form
    1,213/2,785 = 2,785/x
  3. Step 3: Cross multiply
    1,213x = 2,785 × 2,785
  4. Step 4: Simplify right side
    1,213x = 7,756,225
  5. Step 5: Solve for x
    x = 7,756,225/1,213
  6. Step 6: Final answer
    x = 6,394.25

Related Problems

Find third proportional to 606.50 and 1,392.50
Half scale
Find third proportional to 2,426 and 5,570
Double scale
Find third proportional to 1,215 and 2,790
Similar ratio
Find third proportional to 1,819.50 and 4,177.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.