Home / 647-1,294

Finding the Third Proportional to 647 and 1,294

Calculator

Solution

The third proportional to 647 and 1,294 is: 2,588

Step by Step Solution

  1. Step 1: Write the proportion equation
    647 : 1,294 = 1,294 : x
  2. Step 2: Convert to fraction form
    647/1,294 = 1,294/x
  3. Step 3: Cross multiply
    647x = 1,294 × 1,294
  4. Step 4: Simplify right side
    647x = 1,674,436
  5. Step 5: Solve for x
    x = 1,674,436/647
  6. Step 6: Final answer
    x = 2,588

Related Problems

Find third proportional to 323.50 and 647
Half scale
Find third proportional to 1,294 and 2,588
Double scale
Find third proportional to 649 and 1,298
Similar ratio
Find third proportional to 970.50 and 1,941
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.