Home / 3,278.63-4,918.11-3,112.55

Finding the Fourth Proportional to 3,278.63, 4,918.11 and 3,112.55

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Solution

The fourth proportional to 3,278.63, 4,918.11 and 3,112.55 is: 4,668.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.63 : 4,918.11 = 3,112.55 : x
  2. Step 2: Convert to fraction form
    3,278.63/4,918.11 = 3,112.55/x
  3. Step 3: Cross multiply
    3,278.63x = 4,918.11 × 3,112.55
  4. Step 4: Simplify right side
    3,278.63x = 15,307,838.69
  5. Step 5: Solve for x
    x = 15,307,838.69/3,278.63
  6. Step 6: Final answer
    x = 4,668.98

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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.