Home / 3,923.76-5,400-3,292.80

Finding the Fourth Proportional to 3,923.76, 5,400 and 3,292.80

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Solution

The fourth proportional to 3,923.76, 5,400 and 3,292.80 is: 4,531.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.76 : 5,400 = 3,292.80 : x
  2. Step 2: Convert to fraction form
    3,923.76/5,400 = 3,292.80/x
  3. Step 3: Cross multiply
    3,923.76x = 5,400 × 3,292.80
  4. Step 4: Simplify right side
    3,923.76x = 17,781,120
  5. Step 5: Solve for x
    x = 17,781,120/3,923.76
  6. Step 6: Final answer
    x = 4,531.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.