Home / 629-1,386

Finding the Third Proportional to 629 and 1,386

Calculator

Solution

The third proportional to 629 and 1,386 is: 3,054.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    629 : 1,386 = 1,386 : x
  2. Step 2: Convert to fraction form
    629/1,386 = 1,386/x
  3. Step 3: Cross multiply
    629x = 1,386 × 1,386
  4. Step 4: Simplify right side
    629x = 1,920,996
  5. Step 5: Solve for x
    x = 1,920,996/629
  6. Step 6: Final answer
    x = 3,054.05

Related Problems

Find third proportional to 314.50 and 693
Half scale
Find third proportional to 1,258 and 2,772
Double scale
Find third proportional to 631 and 1,390
Similar ratio
Find third proportional to 943.50 and 2,079
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.