Home / 39.77-59.28-38.45

Finding the Fourth Proportional to 39.77, 59.28 and 38.45

Calculator

Solution

The fourth proportional to 39.77, 59.28 and 38.45 is: 57.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.77 : 59.28 = 38.45 : x
  2. Step 2: Convert to fraction form
    39.77/59.28 = 38.45/x
  3. Step 3: Cross multiply
    39.77x = 59.28 × 38.45
  4. Step 4: Simplify right side
    39.77x = 2,279.02
  5. Step 5: Solve for x
    x = 2,279.02/39.77
  6. Step 6: Final answer
    x = 57.31

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.