Home / 863-1,540

Finding the Third Proportional to 863 and 1,540

Calculator

Solution

The third proportional to 863 and 1,540 is: 2,748.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    863 : 1,540 = 1,540 : x
  2. Step 2: Convert to fraction form
    863/1,540 = 1,540/x
  3. Step 3: Cross multiply
    863x = 1,540 × 1,540
  4. Step 4: Simplify right side
    863x = 2,371,600
  5. Step 5: Solve for x
    x = 2,371,600/863
  6. Step 6: Final answer
    x = 2,748.09

Related Problems

Find third proportional to 431.50 and 770
Half scale
Find third proportional to 1,726 and 3,080
Double scale
Find third proportional to 865 and 1,544
Similar ratio
Find third proportional to 1,294.50 and 2,310
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.