Home / 1,392.27-2,076.24-1,219.74

Finding the Fourth Proportional to 1,392.27, 2,076.24 and 1,219.74

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Solution

The fourth proportional to 1,392.27, 2,076.24 and 1,219.74 is: 1,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.27 : 2,076.24 = 1,219.74 : x
  2. Step 2: Convert to fraction form
    1,392.27/2,076.24 = 1,219.74/x
  3. Step 3: Cross multiply
    1,392.27x = 2,076.24 × 1,219.74
  4. Step 4: Simplify right side
    1,392.27x = 2,532,472.98
  5. Step 5: Solve for x
    x = 2,532,472.98/1,392.27
  6. Step 6: Final answer
    x = 1,818.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.