Home / 43-47

Finding the Third Proportional to 43 and 47

Calculator

Solution

The third proportional to 43 and 47 is: 51.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    43 : 47 = 47 : x
  2. Step 2: Convert to fraction form
    43/47 = 47/x
  3. Step 3: Cross multiply
    43x = 47 × 47
  4. Step 4: Simplify right side
    43x = 2,209
  5. Step 5: Solve for x
    x = 2,209/43
  6. Step 6: Final answer
    x = 51.37

Related Problems

Find third proportional to 21.50 and 23.50
Half scale
Find third proportional to 86 and 94
Double scale
Find third proportional to 45 and 49
Similar ratio
Find third proportional to 64.50 and 70.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.