Home / 2,415.12-3,623.40-771.90

Finding the Fourth Proportional to 2,415.12, 3,623.40 and 771.90

Calculator

Solution

The fourth proportional to 2,415.12, 3,623.40 and 771.90 is: 1,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.12 : 3,623.40 = 771.90 : x
  2. Step 2: Convert to fraction form
    2,415.12/3,623.40 = 771.90/x
  3. Step 3: Cross multiply
    2,415.12x = 3,623.40 × 771.90
  4. Step 4: Simplify right side
    2,415.12x = 2,796,902.46
  5. Step 5: Solve for x
    x = 2,796,902.46/2,415.12
  6. Step 6: Final answer
    x = 1,158.08

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.