Home / 1,276.29-1,914.21-351.63

Finding the Fourth Proportional to 1,276.29, 1,914.21 and 351.63

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Solution

The fourth proportional to 1,276.29, 1,914.21 and 351.63 is: 527.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.29 : 1,914.21 = 351.63 : x
  2. Step 2: Convert to fraction form
    1,276.29/1,914.21 = 351.63/x
  3. Step 3: Cross multiply
    1,276.29x = 1,914.21 × 351.63
  4. Step 4: Simplify right side
    1,276.29x = 673,093.66
  5. Step 5: Solve for x
    x = 673,093.66/1,276.29
  6. Step 6: Final answer
    x = 527.38

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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.