Home / 2,806-5,215

Finding the Third Proportional to 2,806 and 5,215

Calculator

Solution

The third proportional to 2,806 and 5,215 is: 9,692.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806 : 5,215 = 5,215 : x
  2. Step 2: Convert to fraction form
    2,806/5,215 = 5,215/x
  3. Step 3: Cross multiply
    2,806x = 5,215 × 5,215
  4. Step 4: Simplify right side
    2,806x = 27,196,225
  5. Step 5: Solve for x
    x = 27,196,225/2,806
  6. Step 6: Final answer
    x = 9,692.17

Related Problems

Find third proportional to 1,403 and 2,607.50
Half scale
Find third proportional to 5,612 and 10,430
Double scale
Find third proportional to 2,808 and 5,219
Similar ratio
Find third proportional to 4,209 and 7,822.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.