Home / 783.42-1,138.43

Finding the Third Proportional to 783.42 and 1,138.43

Calculator

Solution

The third proportional to 783.42 and 1,138.43 is: 1,654.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.42 : 1,138.43 = 1,138.43 : x
  2. Step 2: Convert to fraction form
    783.42/1,138.43 = 1,138.43/x
  3. Step 3: Cross multiply
    783.42x = 1,138.43 × 1,138.43
  4. Step 4: Simplify right side
    783.42x = 1,296,022.15
  5. Step 5: Solve for x
    x = 1,296,022.15/783.42
  6. Step 6: Final answer
    x = 1,654.31

Related Problems

Find third proportional to 391.71 and 569.21
Half scale
Find third proportional to 1,566.84 and 2,276.86
Double scale
Find third proportional to 785 and 1,141
Similar ratio
Find third proportional to 1,175.13 and 1,707.64
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.