Home / 1,485.05-2,226.90-791.54

Finding the Fourth Proportional to 1,485.05, 2,226.90 and 791.54

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Solution

The fourth proportional to 1,485.05, 2,226.90 and 791.54 is: 1,186.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.05 : 2,226.90 = 791.54 : x
  2. Step 2: Convert to fraction form
    1,485.05/2,226.90 = 791.54/x
  3. Step 3: Cross multiply
    1,485.05x = 2,226.90 × 791.54
  4. Step 4: Simplify right side
    1,485.05x = 1,762,680.43
  5. Step 5: Solve for x
    x = 1,762,680.43/1,485.05
  6. Step 6: Final answer
    x = 1,186.95

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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.