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Finding the Fourth Proportional to 3,425.74, 5,141.82 and 1,783.48

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Solution

The fourth proportional to 3,425.74, 5,141.82 and 1,783.48 is: 2,676.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.74 : 5,141.82 = 1,783.48 : x
  2. Step 2: Convert to fraction form
    3,425.74/5,141.82 = 1,783.48/x
  3. Step 3: Cross multiply
    3,425.74x = 5,141.82 × 1,783.48
  4. Step 4: Simplify right side
    3,425.74x = 9,170,333.13
  5. Step 5: Solve for x
    x = 9,170,333.13/3,425.74
  6. Step 6: Final answer
    x = 2,676.89

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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.