Home / 1,586.40-2,379.60-817.12

Finding the Fourth Proportional to 1,586.40, 2,379.60 and 817.12

Calculator

Solution

The fourth proportional to 1,586.40, 2,379.60 and 817.12 is: 1,225.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.40 : 2,379.60 = 817.12 : x
  2. Step 2: Convert to fraction form
    1,586.40/2,379.60 = 817.12/x
  3. Step 3: Cross multiply
    1,586.40x = 2,379.60 × 817.12
  4. Step 4: Simplify right side
    1,586.40x = 1,944,418.75
  5. Step 5: Solve for x
    x = 1,944,418.75/1,586.40
  6. Step 6: Final answer
    x = 1,225.68

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.