Home / 3,131.71-4,322.26-2,012.60

Finding the Fourth Proportional to 3,131.71, 4,322.26 and 2,012.60

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Solution

The fourth proportional to 3,131.71, 4,322.26 and 2,012.60 is: 2,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.71 : 4,322.26 = 2,012.60 : x
  2. Step 2: Convert to fraction form
    3,131.71/4,322.26 = 2,012.60/x
  3. Step 3: Cross multiply
    3,131.71x = 4,322.26 × 2,012.60
  4. Step 4: Simplify right side
    3,131.71x = 8,698,969.48
  5. Step 5: Solve for x
    x = 8,698,969.48/3,131.71
  6. Step 6: Final answer
    x = 2,777.70

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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.