Home / 1,872-3,897

Finding the Third Proportional to 1,872 and 3,897

Calculator

Solution

The third proportional to 1,872 and 3,897 is: 8,112.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872 : 3,897 = 3,897 : x
  2. Step 2: Convert to fraction form
    1,872/3,897 = 3,897/x
  3. Step 3: Cross multiply
    1,872x = 3,897 × 3,897
  4. Step 4: Simplify right side
    1,872x = 15,186,609
  5. Step 5: Solve for x
    x = 15,186,609/1,872
  6. Step 6: Final answer
    x = 8,112.50

Related Problems

Find third proportional to 936 and 1,948.50
Half scale
Find third proportional to 3,744 and 7,794
Double scale
Find third proportional to 1,874 and 3,901
Similar ratio
Find third proportional to 2,808 and 5,845.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.