Home / 817.13-1,138.88

Finding the Third Proportional to 817.13 and 1,138.88

Calculator

Solution

The third proportional to 817.13 and 1,138.88 is: 1,587.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    817.13 : 1,138.88 = 1,138.88 : x
  2. Step 2: Convert to fraction form
    817.13/1,138.88 = 1,138.88/x
  3. Step 3: Cross multiply
    817.13x = 1,138.88 × 1,138.88
  4. Step 4: Simplify right side
    817.13x = 1,297,036.27
  5. Step 5: Solve for x
    x = 1,297,036.27/817.13
  6. Step 6: Final answer
    x = 1,587.32

Related Problems

Find third proportional to 408.56 and 569.44
Half scale
Find third proportional to 1,634.25 and 2,277.75
Double scale
Find third proportional to 819 and 1,142
Similar ratio
Find third proportional to 1,225.69 and 1,708.31
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.