Home / 1,257.46-1,879.58-1,091.61

Finding the Fourth Proportional to 1,257.46, 1,879.58 and 1,091.61

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Solution

The fourth proportional to 1,257.46, 1,879.58 and 1,091.61 is: 1,631.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.46 : 1,879.58 = 1,091.61 : x
  2. Step 2: Convert to fraction form
    1,257.46/1,879.58 = 1,091.61/x
  3. Step 3: Cross multiply
    1,257.46x = 1,879.58 × 1,091.61
  4. Step 4: Simplify right side
    1,257.46x = 2,051,771.05
  5. Step 5: Solve for x
    x = 2,051,771.05/1,257.46
  6. Step 6: Final answer
    x = 1,631.68

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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.