Home / 1,409.94-2,115.45-679.46

Finding the Fourth Proportional to 1,409.94, 2,115.45 and 679.46

Calculator

Solution

The fourth proportional to 1,409.94, 2,115.45 and 679.46 is: 1,019.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.94 : 2,115.45 = 679.46 : x
  2. Step 2: Convert to fraction form
    1,409.94/2,115.45 = 679.46/x
  3. Step 3: Cross multiply
    1,409.94x = 2,115.45 × 679.46
  4. Step 4: Simplify right side
    1,409.94x = 1,437,353.08
  5. Step 5: Solve for x
    x = 1,437,353.08/1,409.94
  6. Step 6: Final answer
    x = 1,019.44

Related Problems

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.