Home / 3,780.66-5,217.31-2,102.02

Finding the Fourth Proportional to 3,780.66, 5,217.31 and 2,102.02

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Solution

The fourth proportional to 3,780.66, 5,217.31 and 2,102.02 is: 2,900.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.66 : 5,217.31 = 2,102.02 : x
  2. Step 2: Convert to fraction form
    3,780.66/5,217.31 = 2,102.02/x
  3. Step 3: Cross multiply
    3,780.66x = 5,217.31 × 2,102.02
  4. Step 4: Simplify right side
    3,780.66x = 10,966,879.55
  5. Step 5: Solve for x
    x = 10,966,879.55/3,780.66
  6. Step 6: Final answer
    x = 2,900.78

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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.