Home / 929.97-1,395.08-821.31

Finding the Fourth Proportional to 929.97, 1,395.08 and 821.31

Calculator

Solution

The fourth proportional to 929.97, 1,395.08 and 821.31 is: 1,232.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.97 : 1,395.08 = 821.31 : x
  2. Step 2: Convert to fraction form
    929.97/1,395.08 = 821.31/x
  3. Step 3: Cross multiply
    929.97x = 1,395.08 × 821.31
  4. Step 4: Simplify right side
    929.97x = 1,145,789.05
  5. Step 5: Solve for x
    x = 1,145,789.05/929.97
  6. Step 6: Final answer
    x = 1,232.07

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.