Home / 3,780.31-5,669.83-1,147.18

Finding the Fourth Proportional to 3,780.31, 5,669.83 and 1,147.18

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Solution

The fourth proportional to 3,780.31, 5,669.83 and 1,147.18 is: 1,720.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.31 : 5,669.83 = 1,147.18 : x
  2. Step 2: Convert to fraction form
    3,780.31/5,669.83 = 1,147.18/x
  3. Step 3: Cross multiply
    3,780.31x = 5,669.83 × 1,147.18
  4. Step 4: Simplify right side
    3,780.31x = 6,504,316.93
  5. Step 5: Solve for x
    x = 6,504,316.93/3,780.31
  6. Step 6: Final answer
    x = 1,720.58

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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.