Home / 5,555.78-7,668.81-3,198.50

Finding the Fourth Proportional to 5,555.78, 7,668.81 and 3,198.50

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Solution

The fourth proportional to 5,555.78, 7,668.81 and 3,198.50 is: 4,414.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.78 : 7,668.81 = 3,198.50 : x
  2. Step 2: Convert to fraction form
    5,555.78/7,668.81 = 3,198.50/x
  3. Step 3: Cross multiply
    5,555.78x = 7,668.81 × 3,198.50
  4. Step 4: Simplify right side
    5,555.78x = 24,528,688.79
  5. Step 5: Solve for x
    x = 24,528,688.79/5,555.78
  6. Step 6: Final answer
    x = 4,414.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.