Home / 1,258-2,758

Finding the Third Proportional to 1,258 and 2,758

Calculator

Solution

The third proportional to 1,258 and 2,758 is: 6,046.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258 : 2,758 = 2,758 : x
  2. Step 2: Convert to fraction form
    1,258/2,758 = 2,758/x
  3. Step 3: Cross multiply
    1,258x = 2,758 × 2,758
  4. Step 4: Simplify right side
    1,258x = 7,606,564
  5. Step 5: Solve for x
    x = 7,606,564/1,258
  6. Step 6: Final answer
    x = 6,046.55

Related Problems

Find third proportional to 629 and 1,379
Half scale
Find third proportional to 2,516 and 5,516
Double scale
Find third proportional to 1,260 and 2,762
Similar ratio
Find third proportional to 1,887 and 4,137
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.