Home / 1,258.62-1,888.12-393

Finding the Fourth Proportional to 1,258.62, 1,888.12 and 393

Calculator

Solution

The fourth proportional to 1,258.62, 1,888.12 and 393 is: 589.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.62 : 1,888.12 = 393 : x
  2. Step 2: Convert to fraction form
    1,258.62/1,888.12 = 393/x
  3. Step 3: Cross multiply
    1,258.62x = 1,888.12 × 393
  4. Step 4: Simplify right side
    1,258.62x = 742,031.16
  5. Step 5: Solve for x
    x = 742,031.16/1,258.62
  6. Step 6: Final answer
    x = 589.56

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.