Home / 428-1,111

Finding the Third Proportional to 428 and 1,111

Calculator

Solution

The third proportional to 428 and 1,111 is: 2,883.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    428 : 1,111 = 1,111 : x
  2. Step 2: Convert to fraction form
    428/1,111 = 1,111/x
  3. Step 3: Cross multiply
    428x = 1,111 × 1,111
  4. Step 4: Simplify right side
    428x = 1,234,321
  5. Step 5: Solve for x
    x = 1,234,321/428
  6. Step 6: Final answer
    x = 2,883.93

Related Problems

Why These Related Problems?

These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.