Home / 39.19-58.40-37.18

Finding the Fourth Proportional to 39.19, 58.40 and 37.18

Calculator

Solution

The fourth proportional to 39.19, 58.40 and 37.18 is: 55.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.19 : 58.40 = 37.18 : x
  2. Step 2: Convert to fraction form
    39.19/58.40 = 37.18/x
  3. Step 3: Cross multiply
    39.19x = 58.40 × 37.18
  4. Step 4: Simplify right side
    39.19x = 2,171.31
  5. Step 5: Solve for x
    x = 2,171.31/39.19
  6. Step 6: Final answer
    x = 55.40

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.