Home / 1,917-3,942

Finding the Third Proportional to 1,917 and 3,942

Calculator

Solution

The third proportional to 1,917 and 3,942 is: 8,106.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917 : 3,942 = 3,942 : x
  2. Step 2: Convert to fraction form
    1,917/3,942 = 3,942/x
  3. Step 3: Cross multiply
    1,917x = 3,942 × 3,942
  4. Step 4: Simplify right side
    1,917x = 15,539,364
  5. Step 5: Solve for x
    x = 15,539,364/1,917
  6. Step 6: Final answer
    x = 8,106.08

Related Problems

Find third proportional to 958.50 and 1,971
Half scale
Find third proportional to 3,834 and 7,884
Double scale
Find third proportional to 1,919 and 3,946
Similar ratio
Find third proportional to 2,875.50 and 5,913
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.