Home / 1,013.57-1,520.48-397.20

Finding the Fourth Proportional to 1,013.57, 1,520.48 and 397.20

Calculator

Solution

The fourth proportional to 1,013.57, 1,520.48 and 397.20 is: 595.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.57 : 1,520.48 = 397.20 : x
  2. Step 2: Convert to fraction form
    1,013.57/1,520.48 = 397.20/x
  3. Step 3: Cross multiply
    1,013.57x = 1,520.48 × 397.20
  4. Step 4: Simplify right side
    1,013.57x = 603,927.05
  5. Step 5: Solve for x
    x = 603,927.05/1,013.57
  6. Step 6: Final answer
    x = 595.84

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.