Home / 1,938.88-2,905.76-1,882.80

Finding the Fourth Proportional to 1,938.88, 2,905.76 and 1,882.80

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Solution

The fourth proportional to 1,938.88, 2,905.76 and 1,882.80 is: 2,821.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.88 : 2,905.76 = 1,882.80 : x
  2. Step 2: Convert to fraction form
    1,938.88/2,905.76 = 1,882.80/x
  3. Step 3: Cross multiply
    1,938.88x = 2,905.76 × 1,882.80
  4. Step 4: Simplify right side
    1,938.88x = 5,470,964.93
  5. Step 5: Solve for x
    x = 5,470,964.93/1,938.88
  6. Step 6: Final answer
    x = 2,821.71

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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.