Home / 580-872

Finding the Third Proportional to 580 and 872

Calculator

Solution

The third proportional to 580 and 872 is: 1,311.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    580 : 872 = 872 : x
  2. Step 2: Convert to fraction form
    580/872 = 872/x
  3. Step 3: Cross multiply
    580x = 872 × 872
  4. Step 4: Simplify right side
    580x = 760,384
  5. Step 5: Solve for x
    x = 760,384/580
  6. Step 6: Final answer
    x = 1,311.01

Related Problems

Find third proportional to 290 and 436
Half scale
Find third proportional to 1,160 and 1,744
Double scale
Find third proportional to 582 and 875
Similar ratio
Find third proportional to 870 and 1,308
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.