Home / 1,276.81-1,912.19-1,012.41

Finding the Fourth Proportional to 1,276.81, 1,912.19 and 1,012.41

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Solution

The fourth proportional to 1,276.81, 1,912.19 and 1,012.41 is: 1,516.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.81 : 1,912.19 = 1,012.41 : x
  2. Step 2: Convert to fraction form
    1,276.81/1,912.19 = 1,012.41/x
  3. Step 3: Cross multiply
    1,276.81x = 1,912.19 × 1,012.41
  4. Step 4: Simplify right side
    1,276.81x = 1,935,920.28
  5. Step 5: Solve for x
    x = 1,935,920.28/1,276.81
  6. Step 6: Final answer
    x = 1,516.22

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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.