Home / 3,278.56-4,918.68-1,087.90

Finding the Fourth Proportional to 3,278.56, 4,918.68 and 1,087.90

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Solution

The fourth proportional to 3,278.56, 4,918.68 and 1,087.90 is: 1,632.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.56 : 4,918.68 = 1,087.90 : x
  2. Step 2: Convert to fraction form
    3,278.56/4,918.68 = 1,087.90/x
  3. Step 3: Cross multiply
    3,278.56x = 4,918.68 × 1,087.90
  4. Step 4: Simplify right side
    3,278.56x = 5,351,031.97
  5. Step 5: Solve for x
    x = 5,351,031.97/3,278.56
  6. Step 6: Final answer
    x = 1,632.13

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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.