Home / 792-1,280

Finding the Third Proportional to 792 and 1,280

Calculator

Solution

The third proportional to 792 and 1,280 is: 2,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    792 : 1,280 = 1,280 : x
  2. Step 2: Convert to fraction form
    792/1,280 = 1,280/x
  3. Step 3: Cross multiply
    792x = 1,280 × 1,280
  4. Step 4: Simplify right side
    792x = 1,638,400
  5. Step 5: Solve for x
    x = 1,638,400/792
  6. Step 6: Final answer
    x = 2,068.69

Related Problems

Find third proportional to 396 and 640
Half scale
Find third proportional to 1,584 and 2,560
Double scale
Find third proportional to 794 and 1,283
Similar ratio
Find third proportional to 1,188 and 1,920
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.