Home / 876.87-1,918.90

Finding the Third Proportional to 876.87 and 1,918.90

Calculator

Solution

The third proportional to 876.87 and 1,918.90 is: 4,199.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.87 : 1,918.90 = 1,918.90 : x
  2. Step 2: Convert to fraction form
    876.87/1,918.90 = 1,918.90/x
  3. Step 3: Cross multiply
    876.87x = 1,918.90 × 1,918.90
  4. Step 4: Simplify right side
    876.87x = 3,682,171.21
  5. Step 5: Solve for x
    x = 3,682,171.21/876.87
  6. Step 6: Final answer
    x = 4,199.23

Related Problems

Find third proportional to 438.43 and 959.45
Half scale
Find third proportional to 1,753.73 and 3,837.80
Double scale
Find third proportional to 879 and 1,923
Similar ratio
Find third proportional to 1,315.30 and 2,878.35
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.