Home / 2,131.28-2,941-1,246.96

Finding the Fourth Proportional to 2,131.28, 2,941 and 1,246.96

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Solution

The fourth proportional to 2,131.28, 2,941 and 1,246.96 is: 1,720.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.28 : 2,941 = 1,246.96 : x
  2. Step 2: Convert to fraction form
    2,131.28/2,941 = 1,246.96/x
  3. Step 3: Cross multiply
    2,131.28x = 2,941 × 1,246.96
  4. Step 4: Simplify right side
    2,131.28x = 3,667,309.36
  5. Step 5: Solve for x
    x = 3,667,309.36/2,131.28
  6. Step 6: Final answer
    x = 1,720.71

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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.