Home / 3,920.48-5,879.60-1,323.36

Finding the Fourth Proportional to 3,920.48, 5,879.60 and 1,323.36

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Solution

The fourth proportional to 3,920.48, 5,879.60 and 1,323.36 is: 1,984.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.48 : 5,879.60 = 1,323.36 : x
  2. Step 2: Convert to fraction form
    3,920.48/5,879.60 = 1,323.36/x
  3. Step 3: Cross multiply
    3,920.48x = 5,879.60 × 1,323.36
  4. Step 4: Simplify right side
    3,920.48x = 7,780,827.46
  5. Step 5: Solve for x
    x = 7,780,827.46/3,920.48
  6. Step 6: Final answer
    x = 1,984.66

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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.