Home / 3,278.85-4,915.13-1,086.38

Finding the Fourth Proportional to 3,278.85, 4,915.13 and 1,086.38

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Solution

The fourth proportional to 3,278.85, 4,915.13 and 1,086.38 is: 1,628.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.85 : 4,915.13 = 1,086.38 : x
  2. Step 2: Convert to fraction form
    3,278.85/4,915.13 = 1,086.38/x
  3. Step 3: Cross multiply
    3,278.85x = 4,915.13 × 1,086.38
  4. Step 4: Simplify right side
    3,278.85x = 5,339,693.46
  5. Step 5: Solve for x
    x = 5,339,693.46/3,278.85
  6. Step 6: Final answer
    x = 1,628.53

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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.