Home / 3,131.43-4,319.48-2,069.21

Finding the Fourth Proportional to 3,131.43, 4,319.48 and 2,069.21

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Solution

The fourth proportional to 3,131.43, 4,319.48 and 2,069.21 is: 2,854.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.43 : 4,319.48 = 2,069.21 : x
  2. Step 2: Convert to fraction form
    3,131.43/4,319.48 = 2,069.21/x
  3. Step 3: Cross multiply
    3,131.43x = 4,319.48 × 2,069.21
  4. Step 4: Simplify right side
    3,131.43x = 8,937,879.27
  5. Step 5: Solve for x
    x = 8,937,879.27/3,131.43
  6. Step 6: Final answer
    x = 2,854.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.