Home / 6,381.40-9,572.10-1,999.20

Finding the Fourth Proportional to 6,381.40, 9,572.10 and 1,999.20

Calculator

Solution

The fourth proportional to 6,381.40, 9,572.10 and 1,999.20 is: 2,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.40 : 9,572.10 = 1,999.20 : x
  2. Step 2: Convert to fraction form
    6,381.40/9,572.10 = 1,999.20/x
  3. Step 3: Cross multiply
    6,381.40x = 9,572.10 × 1,999.20
  4. Step 4: Simplify right side
    6,381.40x = 19,136,528.12
  5. Step 5: Solve for x
    x = 19,136,528.12/6,381.40
  6. Step 6: Final answer
    x = 2,998.80

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.