Home / 1,310-2,600

Finding the Third Proportional to 1,310 and 2,600

Calculator

Solution

The third proportional to 1,310 and 2,600 is: 5,160.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310 : 2,600 = 2,600 : x
  2. Step 2: Convert to fraction form
    1,310/2,600 = 2,600/x
  3. Step 3: Cross multiply
    1,310x = 2,600 × 2,600
  4. Step 4: Simplify right side
    1,310x = 6,760,000
  5. Step 5: Solve for x
    x = 6,760,000/1,310
  6. Step 6: Final answer
    x = 5,160.31

Related Problems

Find third proportional to 655 and 1,300
Half scale
Find third proportional to 2,620 and 5,200
Double scale
Find third proportional to 1,312 and 2,604
Similar ratio
Find third proportional to 1,965 and 3,900
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.