Home / 1,276.21-1,914.38-351.89

Finding the Fourth Proportional to 1,276.21, 1,914.38 and 351.89

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Solution

The fourth proportional to 1,276.21, 1,914.38 and 351.89 is: 527.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.21 : 1,914.38 = 351.89 : x
  2. Step 2: Convert to fraction form
    1,276.21/1,914.38 = 351.89/x
  3. Step 3: Cross multiply
    1,276.21x = 1,914.38 × 351.89
  4. Step 4: Simplify right side
    1,276.21x = 673,661.09
  5. Step 5: Solve for x
    x = 673,661.09/1,276.21
  6. Step 6: Final answer
    x = 527.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.