Home / 738-1,239

Finding the Third Proportional to 738 and 1,239

Calculator

Solution

The third proportional to 738 and 1,239 is: 2,080.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    738 : 1,239 = 1,239 : x
  2. Step 2: Convert to fraction form
    738/1,239 = 1,239/x
  3. Step 3: Cross multiply
    738x = 1,239 × 1,239
  4. Step 4: Simplify right side
    738x = 1,535,121
  5. Step 5: Solve for x
    x = 1,535,121/738
  6. Step 6: Final answer
    x = 2,080.11

Related Problems

Find third proportional to 369 and 619.50
Half scale
Find third proportional to 1,476 and 2,478
Double scale
Find third proportional to 740 and 1,242
Similar ratio
Find third proportional to 1,107 and 1,858.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.