Home / 2,172-2,490

Finding the Third Proportional to 2,172 and 2,490

Calculator

Solution

The third proportional to 2,172 and 2,490 is: 2,854.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172 : 2,490 = 2,490 : x
  2. Step 2: Convert to fraction form
    2,172/2,490 = 2,490/x
  3. Step 3: Cross multiply
    2,172x = 2,490 × 2,490
  4. Step 4: Simplify right side
    2,172x = 6,200,100
  5. Step 5: Solve for x
    x = 6,200,100/2,172
  6. Step 6: Final answer
    x = 2,854.56

Related Problems

Find third proportional to 1,086 and 1,245
Half scale
Find third proportional to 4,344 and 4,980
Double scale
Find third proportional to 2,174 and 2,492
Similar ratio
Find third proportional to 3,258 and 3,735
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.