Home / 1,390-2,983

Finding the Third Proportional to 1,390 and 2,983

Calculator

Solution

The third proportional to 1,390 and 2,983 is: 6,401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390 : 2,983 = 2,983 : x
  2. Step 2: Convert to fraction form
    1,390/2,983 = 2,983/x
  3. Step 3: Cross multiply
    1,390x = 2,983 × 2,983
  4. Step 4: Simplify right side
    1,390x = 8,898,289
  5. Step 5: Solve for x
    x = 8,898,289/1,390
  6. Step 6: Final answer
    x = 6,401.65

Related Problems

Find third proportional to 695 and 1,491.50
Half scale
Find third proportional to 2,780 and 5,966
Double scale
Find third proportional to 1,392 and 2,987
Similar ratio
Find third proportional to 2,085 and 4,474.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.