Home / 8,990.54-13,491.88-3,147.20

Finding the Fourth Proportional to 8,990.54, 13,491.88 and 3,147.20

Calculator

Solution

The fourth proportional to 8,990.54, 13,491.88 and 3,147.20 is: 4,722.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.54 : 13,491.88 = 3,147.20 : x
  2. Step 2: Convert to fraction form
    8,990.54/13,491.88 = 3,147.20/x
  3. Step 3: Cross multiply
    8,990.54x = 13,491.88 × 3,147.20
  4. Step 4: Simplify right side
    8,990.54x = 42,461,644.74
  5. Step 5: Solve for x
    x = 42,461,644.74/8,990.54
  6. Step 6: Final answer
    x = 4,722.92

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.