Home / 1,913-3,947

Finding the Third Proportional to 1,913 and 3,947

Calculator

Solution

The third proportional to 1,913 and 3,947 is: 8,143.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913 : 3,947 = 3,947 : x
  2. Step 2: Convert to fraction form
    1,913/3,947 = 3,947/x
  3. Step 3: Cross multiply
    1,913x = 3,947 × 3,947
  4. Step 4: Simplify right side
    1,913x = 15,578,809
  5. Step 5: Solve for x
    x = 15,578,809/1,913
  6. Step 6: Final answer
    x = 8,143.65

Related Problems

Find third proportional to 956.50 and 1,973.50
Half scale
Find third proportional to 3,826 and 7,894
Double scale
Find third proportional to 1,915 and 3,951
Similar ratio
Find third proportional to 2,869.50 and 5,920.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.