Home / 1,197.06-1,787.40-1,072.86

Finding the Fourth Proportional to 1,197.06, 1,787.40 and 1,072.86

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Solution

The fourth proportional to 1,197.06, 1,787.40 and 1,072.86 is: 1,601.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.06 : 1,787.40 = 1,072.86 : x
  2. Step 2: Convert to fraction form
    1,197.06/1,787.40 = 1,072.86/x
  3. Step 3: Cross multiply
    1,197.06x = 1,787.40 × 1,072.86
  4. Step 4: Simplify right side
    1,197.06x = 1,917,629.96
  5. Step 5: Solve for x
    x = 1,917,629.96/1,197.06
  6. Step 6: Final answer
    x = 1,601.95

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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.