Home / 1,356-2,940

Finding the Third Proportional to 1,356 and 2,940

Calculator

Solution

The third proportional to 1,356 and 2,940 is: 6,374.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356 : 2,940 = 2,940 : x
  2. Step 2: Convert to fraction form
    1,356/2,940 = 2,940/x
  3. Step 3: Cross multiply
    1,356x = 2,940 × 2,940
  4. Step 4: Simplify right side
    1,356x = 8,643,600
  5. Step 5: Solve for x
    x = 8,643,600/1,356
  6. Step 6: Final answer
    x = 6,374.34

Related Problems

Find third proportional to 678 and 1,470
Half scale
Find third proportional to 2,712 and 5,880
Double scale
Find third proportional to 1,358 and 2,944
Similar ratio
Find third proportional to 2,034 and 4,410
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.