Home / 612-1,281

Finding the Third Proportional to 612 and 1,281

Calculator

Solution

The third proportional to 612 and 1,281 is: 2,681.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    612 : 1,281 = 1,281 : x
  2. Step 2: Convert to fraction form
    612/1,281 = 1,281/x
  3. Step 3: Cross multiply
    612x = 1,281 × 1,281
  4. Step 4: Simplify right side
    612x = 1,640,961
  5. Step 5: Solve for x
    x = 1,640,961/612
  6. Step 6: Final answer
    x = 2,681.31

Related Problems

Find third proportional to 306 and 640.50
Half scale
Find third proportional to 1,224 and 2,562
Double scale
Find third proportional to 614 and 1,285
Similar ratio
Find third proportional to 918 and 1,921.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.