Home / 3,281.14-4,918.72-1,638.18

Finding the Fourth Proportional to 3,281.14, 4,918.72 and 1,638.18

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Solution

The fourth proportional to 3,281.14, 4,918.72 and 1,638.18 is: 2,455.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.14 : 4,918.72 = 1,638.18 : x
  2. Step 2: Convert to fraction form
    3,281.14/4,918.72 = 1,638.18/x
  3. Step 3: Cross multiply
    3,281.14x = 4,918.72 × 1,638.18
  4. Step 4: Simplify right side
    3,281.14x = 8,057,748.73
  5. Step 5: Solve for x
    x = 8,057,748.73/3,281.14
  6. Step 6: Final answer
    x = 2,455.78

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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.