Home / 3,788.95-5,680.80-1,938.81

Finding the Fourth Proportional to 3,788.95, 5,680.80 and 1,938.81

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Solution

The fourth proportional to 3,788.95, 5,680.80 and 1,938.81 is: 2,906.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.95 : 5,680.80 = 1,938.81 : x
  2. Step 2: Convert to fraction form
    3,788.95/5,680.80 = 1,938.81/x
  3. Step 3: Cross multiply
    3,788.95x = 5,680.80 × 1,938.81
  4. Step 4: Simplify right side
    3,788.95x = 11,013,963.44
  5. Step 5: Solve for x
    x = 11,013,963.44/3,788.95
  6. Step 6: Final answer
    x = 2,906.87

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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.