Home / 679-1,277

Finding the Third Proportional to 679 and 1,277

Calculator

Solution

The third proportional to 679 and 1,277 is: 2,401.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    679 : 1,277 = 1,277 : x
  2. Step 2: Convert to fraction form
    679/1,277 = 1,277/x
  3. Step 3: Cross multiply
    679x = 1,277 × 1,277
  4. Step 4: Simplify right side
    679x = 1,630,729
  5. Step 5: Solve for x
    x = 1,630,729/679
  6. Step 6: Final answer
    x = 2,401.66

Related Problems

Find third proportional to 339.50 and 638.50
Half scale
Find third proportional to 1,358 and 2,554
Double scale
Find third proportional to 681 and 1,281
Similar ratio
Find third proportional to 1,018.50 and 1,915.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.