Home / 1,238-2,680

Finding the Third Proportional to 1,238 and 2,680

Calculator

Solution

The third proportional to 1,238 and 2,680 is: 5,801.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238 : 2,680 = 2,680 : x
  2. Step 2: Convert to fraction form
    1,238/2,680 = 2,680/x
  3. Step 3: Cross multiply
    1,238x = 2,680 × 2,680
  4. Step 4: Simplify right side
    1,238x = 7,182,400
  5. Step 5: Solve for x
    x = 7,182,400/1,238
  6. Step 6: Final answer
    x = 5,801.62

Related Problems

Find third proportional to 619 and 1,340
Half scale
Find third proportional to 2,476 and 5,360
Double scale
Find third proportional to 1,240 and 2,684
Similar ratio
Find third proportional to 1,857 and 4,020
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.