Home / 771-1,158

Finding the Third Proportional to 771 and 1,158

Calculator

Solution

The third proportional to 771 and 1,158 is: 1,739.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    771 : 1,158 = 1,158 : x
  2. Step 2: Convert to fraction form
    771/1,158 = 1,158/x
  3. Step 3: Cross multiply
    771x = 1,158 × 1,158
  4. Step 4: Simplify right side
    771x = 1,340,964
  5. Step 5: Solve for x
    x = 1,340,964/771
  6. Step 6: Final answer
    x = 1,739.25

Related Problems

Find third proportional to 385.50 and 579
Half scale
Find third proportional to 1,542 and 2,316
Double scale
Find third proportional to 773 and 1,161
Similar ratio
Find third proportional to 1,156.50 and 1,737
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.