Home / 798-1,240

Finding the Third Proportional to 798 and 1,240

Calculator

Solution

The third proportional to 798 and 1,240 is: 1,926.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    798 : 1,240 = 1,240 : x
  2. Step 2: Convert to fraction form
    798/1,240 = 1,240/x
  3. Step 3: Cross multiply
    798x = 1,240 × 1,240
  4. Step 4: Simplify right side
    798x = 1,537,600
  5. Step 5: Solve for x
    x = 1,537,600/798
  6. Step 6: Final answer
    x = 1,926.82

Related Problems

Find third proportional to 399 and 620
Half scale
Find third proportional to 1,596 and 2,480
Double scale
Find third proportional to 800 and 1,243
Similar ratio
Find third proportional to 1,197 and 1,860
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.