Home / 3,917.39-5,876.63-1,321.07

Finding the Fourth Proportional to 3,917.39, 5,876.63 and 1,321.07

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Solution

The fourth proportional to 3,917.39, 5,876.63 and 1,321.07 is: 1,981.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.39 : 5,876.63 = 1,321.07 : x
  2. Step 2: Convert to fraction form
    3,917.39/5,876.63 = 1,321.07/x
  3. Step 3: Cross multiply
    3,917.39x = 5,876.63 × 1,321.07
  4. Step 4: Simplify right side
    3,917.39x = 7,763,432.99
  5. Step 5: Solve for x
    x = 7,763,432.99/3,917.39
  6. Step 6: Final answer
    x = 1,981.79

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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.