Home / 5,169.02-7,133.18-2,811.20

Finding the Fourth Proportional to 5,169.02, 7,133.18 and 2,811.20

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Solution

The fourth proportional to 5,169.02, 7,133.18 and 2,811.20 is: 3,879.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.02 : 7,133.18 = 2,811.20 : x
  2. Step 2: Convert to fraction form
    5,169.02/7,133.18 = 2,811.20/x
  3. Step 3: Cross multiply
    5,169.02x = 7,133.18 × 2,811.20
  4. Step 4: Simplify right side
    5,169.02x = 20,052,795.62
  5. Step 5: Solve for x
    x = 20,052,795.62/5,169.02
  6. Step 6: Final answer
    x = 3,879.42

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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.