Home / 5,169.23-7,133.55-2,811.38

Finding the Fourth Proportional to 5,169.23, 7,133.55 and 2,811.38

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Solution

The fourth proportional to 5,169.23, 7,133.55 and 2,811.38 is: 3,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.23 : 7,133.55 = 2,811.38 : x
  2. Step 2: Convert to fraction form
    5,169.23/7,133.55 = 2,811.38/x
  3. Step 3: Cross multiply
    5,169.23x = 7,133.55 × 2,811.38
  4. Step 4: Simplify right side
    5,169.23x = 20,055,089.40
  5. Step 5: Solve for x
    x = 20,055,089.40/5,169.23
  6. Step 6: Final answer
    x = 3,879.70

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1.5x scale

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.