Home / 1,355.61-1,870.92-766.20

Finding the Fourth Proportional to 1,355.61, 1,870.92 and 766.20

Calculator

Solution

The fourth proportional to 1,355.61, 1,870.92 and 766.20 is: 1,057.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.61 : 1,870.92 = 766.20 : x
  2. Step 2: Convert to fraction form
    1,355.61/1,870.92 = 766.20/x
  3. Step 3: Cross multiply
    1,355.61x = 1,870.92 × 766.20
  4. Step 4: Simplify right side
    1,355.61x = 1,433,498.90
  5. Step 5: Solve for x
    x = 1,433,498.90/1,355.61
  6. Step 6: Final answer
    x = 1,057.46

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.