Home / 938.80-1,293.54-717.34

Finding the Fourth Proportional to 938.80, 1,293.54 and 717.34

Calculator

Solution

The fourth proportional to 938.80, 1,293.54 and 717.34 is: 988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.80 : 1,293.54 = 717.34 : x
  2. Step 2: Convert to fraction form
    938.80/1,293.54 = 717.34/x
  3. Step 3: Cross multiply
    938.80x = 1,293.54 × 717.34
  4. Step 4: Simplify right side
    938.80x = 927,907.98
  5. Step 5: Solve for x
    x = 927,907.98/938.80
  6. Step 6: Final answer
    x = 988.40

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.