Home / 1,163.04-1,605.08-639.08

Finding the Fourth Proportional to 1,163.04, 1,605.08 and 639.08

Calculator

Solution

The fourth proportional to 1,163.04, 1,605.08 and 639.08 is: 881.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.04 : 1,605.08 = 639.08 : x
  2. Step 2: Convert to fraction form
    1,163.04/1,605.08 = 639.08/x
  3. Step 3: Cross multiply
    1,163.04x = 1,605.08 × 639.08
  4. Step 4: Simplify right side
    1,163.04x = 1,025,774.53
  5. Step 5: Solve for x
    x = 1,025,774.53/1,163.04
  6. Step 6: Final answer
    x = 881.98

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.