Home / 3,876.80-5,811.60-1,569.92

Finding the Fourth Proportional to 3,876.80, 5,811.60 and 1,569.92

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Solution

The fourth proportional to 3,876.80, 5,811.60 and 1,569.92 is: 2,353.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.80 : 5,811.60 = 1,569.92 : x
  2. Step 2: Convert to fraction form
    3,876.80/5,811.60 = 1,569.92/x
  3. Step 3: Cross multiply
    3,876.80x = 5,811.60 × 1,569.92
  4. Step 4: Simplify right side
    3,876.80x = 9,123,747.07
  5. Step 5: Solve for x
    x = 9,123,747.07/3,876.80
  6. Step 6: Final answer
    x = 2,353.42

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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.