Home / 858.38-1,779.19

Finding the Third Proportional to 858.38 and 1,779.19

Calculator

Solution

The third proportional to 858.38 and 1,779.19 is: 3,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.38 : 1,779.19 = 1,779.19 : x
  2. Step 2: Convert to fraction form
    858.38/1,779.19 = 1,779.19/x
  3. Step 3: Cross multiply
    858.38x = 1,779.19 × 1,779.19
  4. Step 4: Simplify right side
    858.38x = 3,165,508.16
  5. Step 5: Solve for x
    x = 3,165,508.16/858.38
  6. Step 6: Final answer
    x = 3,687.79

Related Problems

Find third proportional to 429.19 and 889.59
Half scale
Find third proportional to 1,716.75 and 3,558.38
Double scale
Find third proportional to 860 and 1,783
Similar ratio
Find third proportional to 1,287.56 and 2,668.78
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.