Home / 2,912-7,864

Finding the Third Proportional to 2,912 and 7,864

Calculator

Solution

The third proportional to 2,912 and 7,864 is: 21,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912 : 7,864 = 7,864 : x
  2. Step 2: Convert to fraction form
    2,912/7,864 = 7,864/x
  3. Step 3: Cross multiply
    2,912x = 7,864 × 7,864
  4. Step 4: Simplify right side
    2,912x = 61,842,496
  5. Step 5: Solve for x
    x = 61,842,496/2,912
  6. Step 6: Final answer
    x = 21,237.12

Related Problems

Find third proportional to 1,456 and 3,932
Half scale
Find third proportional to 5,824 and 15,728
Double scale
Find third proportional to 2,914 and 7,869
Similar ratio
Find third proportional to 4,368 and 11,796
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.