Home / 898-1,239

Finding the Third Proportional to 898 and 1,239

Calculator

Solution

The third proportional to 898 and 1,239 is: 1,709.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    898 : 1,239 = 1,239 : x
  2. Step 2: Convert to fraction form
    898/1,239 = 1,239/x
  3. Step 3: Cross multiply
    898x = 1,239 × 1,239
  4. Step 4: Simplify right side
    898x = 1,535,121
  5. Step 5: Solve for x
    x = 1,535,121/898
  6. Step 6: Final answer
    x = 1,709.49

Related Problems

Find third proportional to 449 and 619.50
Half scale
Find third proportional to 1,796 and 2,478
Double scale
Find third proportional to 900 and 1,242
Similar ratio
Find third proportional to 1,347 and 1,858.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.