Home / 5,169.15-7,133.21-2,811.29

Finding the Fourth Proportional to 5,169.15, 7,133.21 and 2,811.29

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Solution

The fourth proportional to 5,169.15, 7,133.21 and 2,811.29 is: 3,879.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.15 : 7,133.21 = 2,811.29 : x
  2. Step 2: Convert to fraction form
    5,169.15/7,133.21 = 2,811.29/x
  3. Step 3: Cross multiply
    5,169.15x = 7,133.21 × 2,811.29
  4. Step 4: Simplify right side
    5,169.15x = 20,053,486.27
  5. Step 5: Solve for x
    x = 20,053,486.27/5,169.15
  6. Step 6: Final answer
    x = 3,879.46

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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.