Home / 2,131.12-2,940.19-1,246.60

Finding the Fourth Proportional to 2,131.12, 2,940.19 and 1,246.60

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Solution

The fourth proportional to 2,131.12, 2,940.19 and 1,246.60 is: 1,719.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.12 : 2,940.19 = 1,246.60 : x
  2. Step 2: Convert to fraction form
    2,131.12/2,940.19 = 1,246.60/x
  3. Step 3: Cross multiply
    2,131.12x = 2,940.19 × 1,246.60
  4. Step 4: Simplify right side
    2,131.12x = 3,665,240.85
  5. Step 5: Solve for x
    x = 3,665,240.85/2,131.12
  6. Step 6: Final answer
    x = 1,719.87

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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.