Home / 3,687-8,520

Finding the Third Proportional to 3,687 and 8,520

Calculator

Solution

The third proportional to 3,687 and 8,520 is: 19,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687 : 8,520 = 8,520 : x
  2. Step 2: Convert to fraction form
    3,687/8,520 = 8,520/x
  3. Step 3: Cross multiply
    3,687x = 8,520 × 8,520
  4. Step 4: Simplify right side
    3,687x = 72,590,400
  5. Step 5: Solve for x
    x = 72,590,400/3,687
  6. Step 6: Final answer
    x = 19,688.20

Related Problems

Find third proportional to 1,843.50 and 4,260
Half scale
Find third proportional to 7,374 and 17,040
Double scale
Find third proportional to 3,689 and 8,525
Similar ratio
Find third proportional to 5,530.50 and 12,780
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.