Home / 387-777

Finding the Third Proportional to 387 and 777

Calculator

Solution

The third proportional to 387 and 777 is: 1,560.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    387 : 777 = 777 : x
  2. Step 2: Convert to fraction form
    387/777 = 777/x
  3. Step 3: Cross multiply
    387x = 777 × 777
  4. Step 4: Simplify right side
    387x = 603,729
  5. Step 5: Solve for x
    x = 603,729/387
  6. Step 6: Final answer
    x = 1,560.02

Related Problems

Why These Related Problems?

These problems maintain the same ratio (2.01) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.