Home / 7,803-12,159

Finding the Third Proportional to 7,803 and 12,159

Calculator

Solution

The third proportional to 7,803 and 12,159 is: 18,946.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,803 : 12,159 = 12,159 : x
  2. Step 2: Convert to fraction form
    7,803/12,159 = 12,159/x
  3. Step 3: Cross multiply
    7,803x = 12,159 × 12,159
  4. Step 4: Simplify right side
    7,803x = 147,841,281
  5. Step 5: Solve for x
    x = 147,841,281/7,803
  6. Step 6: Final answer
    x = 18,946.72

Related Problems

Find third proportional to 3,901.50 and 6,079.50
Half scale
Find third proportional to 15,606 and 24,318
Double scale
Find third proportional to 7,805 and 12,162
Similar ratio
Find third proportional to 11,704.50 and 18,238.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.