Home / 869.25-1,779

Finding the Third Proportional to 869.25 and 1,779

Calculator

Solution

The third proportional to 869.25 and 1,779 is: 3,640.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    869.25 : 1,779 = 1,779 : x
  2. Step 2: Convert to fraction form
    869.25/1,779 = 1,779/x
  3. Step 3: Cross multiply
    869.25x = 1,779 × 1,779
  4. Step 4: Simplify right side
    869.25x = 3,164,841
  5. Step 5: Solve for x
    x = 3,164,841/869.25
  6. Step 6: Final answer
    x = 3,640.89

Related Problems

Find third proportional to 434.63 and 889.50
Half scale
Find third proportional to 1,738.50 and 3,558
Double scale
Find third proportional to 871 and 1,783
Similar ratio
Find third proportional to 1,303.88 and 2,668.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.