Home / 1,315.70-1,815.63-726.29

Finding the Fourth Proportional to 1,315.70, 1,815.63 and 726.29

Calculator

Solution

The fourth proportional to 1,315.70, 1,815.63 and 726.29 is: 1,002.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.70 : 1,815.63 = 726.29 : x
  2. Step 2: Convert to fraction form
    1,315.70/1,815.63 = 726.29/x
  3. Step 3: Cross multiply
    1,315.70x = 1,815.63 × 726.29
  4. Step 4: Simplify right side
    1,315.70x = 1,318,664.83
  5. Step 5: Solve for x
    x = 1,318,664.83/1,315.70
  6. Step 6: Final answer
    x = 1,002.26

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.