Home / 2,586.70-3,879.78-1,353.61

Finding the Fourth Proportional to 2,586.70, 3,879.78 and 1,353.61

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Solution

The fourth proportional to 2,586.70, 3,879.78 and 1,353.61 is: 2,030.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.70 : 3,879.78 = 1,353.61 : x
  2. Step 2: Convert to fraction form
    2,586.70/3,879.78 = 1,353.61/x
  3. Step 3: Cross multiply
    2,586.70x = 3,879.78 × 1,353.61
  4. Step 4: Simplify right side
    2,586.70x = 5,251,709.01
  5. Step 5: Solve for x
    x = 5,251,709.01/2,586.70
  6. Step 6: Final answer
    x = 2,030.27

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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.