Home / 2,179.07-3,267.74-791.65

Finding the Fourth Proportional to 2,179.07, 3,267.74 and 791.65

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Solution

The fourth proportional to 2,179.07, 3,267.74 and 791.65 is: 1,187.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.07 : 3,267.74 = 791.65 : x
  2. Step 2: Convert to fraction form
    2,179.07/3,267.74 = 791.65/x
  3. Step 3: Cross multiply
    2,179.07x = 3,267.74 × 791.65
  4. Step 4: Simplify right side
    2,179.07x = 2,586,909.47
  5. Step 5: Solve for x
    x = 2,586,909.47/2,179.07
  6. Step 6: Final answer
    x = 1,187.16

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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.