Home / 1,276.19-1,914.28-351.71

Finding the Fourth Proportional to 1,276.19, 1,914.28 and 351.71

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Solution

The fourth proportional to 1,276.19, 1,914.28 and 351.71 is: 527.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.19 : 1,914.28 = 351.71 : x
  2. Step 2: Convert to fraction form
    1,276.19/1,914.28 = 351.71/x
  3. Step 3: Cross multiply
    1,276.19x = 1,914.28 × 351.71
  4. Step 4: Simplify right side
    1,276.19x = 673,275.33
  5. Step 5: Solve for x
    x = 673,275.33/1,276.19
  6. Step 6: Final answer
    x = 527.57

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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.