Home / 981.50-2,131.75

Finding the Third Proportional to 981.50 and 2,131.75

Calculator

Solution

The third proportional to 981.50 and 2,131.75 is: 4,630.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    981.50 : 2,131.75 = 2,131.75 : x
  2. Step 2: Convert to fraction form
    981.50/2,131.75 = 2,131.75/x
  3. Step 3: Cross multiply
    981.50x = 2,131.75 × 2,131.75
  4. Step 4: Simplify right side
    981.50x = 4,544,358.06
  5. Step 5: Solve for x
    x = 4,544,358.06/981.50
  6. Step 6: Final answer
    x = 4,630.01

Related Problems

Find third proportional to 490.75 and 1,065.88
Half scale
Find third proportional to 1,963 and 4,263.50
Double scale
Find third proportional to 984 and 2,136
Similar ratio
Find third proportional to 1,472.25 and 3,197.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.