Home / 1,359-3,171

Finding the Third Proportional to 1,359 and 3,171

Calculator

Solution

The third proportional to 1,359 and 3,171 is: 7,399

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359 : 3,171 = 3,171 : x
  2. Step 2: Convert to fraction form
    1,359/3,171 = 3,171/x
  3. Step 3: Cross multiply
    1,359x = 3,171 × 3,171
  4. Step 4: Simplify right side
    1,359x = 10,055,241
  5. Step 5: Solve for x
    x = 10,055,241/1,359
  6. Step 6: Final answer
    x = 7,399

Related Problems

Find third proportional to 679.50 and 1,585.50
Half scale
Find third proportional to 2,718 and 6,342
Double scale
Find third proportional to 1,361 and 3,176
Similar ratio
Find third proportional to 2,038.50 and 4,756.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.