Home / 917.75-2,131.25

Finding the Third Proportional to 917.75 and 2,131.25

Calculator

Solution

The third proportional to 917.75 and 2,131.25 is: 4,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.75 : 2,131.25 = 2,131.25 : x
  2. Step 2: Convert to fraction form
    917.75/2,131.25 = 2,131.25/x
  3. Step 3: Cross multiply
    917.75x = 2,131.25 × 2,131.25
  4. Step 4: Simplify right side
    917.75x = 4,542,226.56
  5. Step 5: Solve for x
    x = 4,542,226.56/917.75
  6. Step 6: Final answer
    x = 4,949.31

Related Problems

Find third proportional to 458.88 and 1,065.63
Half scale
Find third proportional to 1,835.50 and 4,262.50
Double scale
Find third proportional to 920 and 2,136
Similar ratio
Find third proportional to 1,376.63 and 3,196.88
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.