Home / 711-787

Finding the Third Proportional to 711 and 787

Calculator

Solution

The third proportional to 711 and 787 is: 871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    711 : 787 = 787 : x
  2. Step 2: Convert to fraction form
    711/787 = 787/x
  3. Step 3: Cross multiply
    711x = 787 × 787
  4. Step 4: Simplify right side
    711x = 619,369
  5. Step 5: Solve for x
    x = 619,369/711
  6. Step 6: Final answer
    x = 871.12

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.