Home / 991.75-2,145.25

Finding the Third Proportional to 991.75 and 2,145.25

Calculator

Solution

The third proportional to 991.75 and 2,145.25 is: 4,640.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    991.75 : 2,145.25 = 2,145.25 : x
  2. Step 2: Convert to fraction form
    991.75/2,145.25 = 2,145.25/x
  3. Step 3: Cross multiply
    991.75x = 2,145.25 × 2,145.25
  4. Step 4: Simplify right side
    991.75x = 4,602,097.56
  5. Step 5: Solve for x
    x = 4,602,097.56/991.75
  6. Step 6: Final answer
    x = 4,640.38

Related Problems

Find third proportional to 495.88 and 1,072.63
Half scale
Find third proportional to 1,983.50 and 4,290.50
Double scale
Find third proportional to 994 and 2,150
Similar ratio
Find third proportional to 1,487.63 and 3,217.88
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.