Home / 2,161.06-3,242.27-774.36

Finding the Fourth Proportional to 2,161.06, 3,242.27 and 774.36

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Solution

The fourth proportional to 2,161.06, 3,242.27 and 774.36 is: 1,161.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.06 : 3,242.27 = 774.36 : x
  2. Step 2: Convert to fraction form
    2,161.06/3,242.27 = 774.36/x
  3. Step 3: Cross multiply
    2,161.06x = 3,242.27 × 774.36
  4. Step 4: Simplify right side
    2,161.06x = 2,510,684.20
  5. Step 5: Solve for x
    x = 2,510,684.20/2,161.06
  6. Step 6: Final answer
    x = 1,161.78

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1.5x scale

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.