Home / 797.50-1,561

Finding the Third Proportional to 797.50 and 1,561

Calculator

Solution

The third proportional to 797.50 and 1,561 is: 3,055.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.50 : 1,561 = 1,561 : x
  2. Step 2: Convert to fraction form
    797.50/1,561 = 1,561/x
  3. Step 3: Cross multiply
    797.50x = 1,561 × 1,561
  4. Step 4: Simplify right side
    797.50x = 2,436,721
  5. Step 5: Solve for x
    x = 2,436,721/797.50
  6. Step 6: Final answer
    x = 3,055.45

Related Problems

Find third proportional to 398.75 and 780.50
Half scale
Find third proportional to 1,595 and 3,122
Double scale
Find third proportional to 800 and 1,565
Similar ratio
Find third proportional to 1,196.25 and 2,341.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.96) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.