Home / 2,849.50-3,930.14-1,966.78

Finding the Fourth Proportional to 2,849.50, 3,930.14 and 1,966.78

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Solution

The fourth proportional to 2,849.50, 3,930.14 and 1,966.78 is: 2,712.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,849.50 : 3,930.14 = 1,966.78 : x
  2. Step 2: Convert to fraction form
    2,849.50/3,930.14 = 1,966.78/x
  3. Step 3: Cross multiply
    2,849.50x = 3,930.14 × 1,966.78
  4. Step 4: Simplify right side
    2,849.50x = 7,729,720.75
  5. Step 5: Solve for x
    x = 7,729,720.75/2,849.50
  6. Step 6: Final answer
    x = 2,712.66

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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.