Home / 1,745.70-2,409.51-999.90

Finding the Fourth Proportional to 1,745.70, 2,409.51 and 999.90

Calculator

Solution

The fourth proportional to 1,745.70, 2,409.51 and 999.90 is: 1,380.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.70 : 2,409.51 = 999.90 : x
  2. Step 2: Convert to fraction form
    1,745.70/2,409.51 = 999.90/x
  3. Step 3: Cross multiply
    1,745.70x = 2,409.51 × 999.90
  4. Step 4: Simplify right side
    1,745.70x = 2,409,269.05
  5. Step 5: Solve for x
    x = 2,409,269.05/1,745.70
  6. Step 6: Final answer
    x = 1,380.12

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.