Home / 7,889.43-11,829.71-2,621.62

Finding the Fourth Proportional to 7,889.43, 11,829.71 and 2,621.62

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Solution

The fourth proportional to 7,889.43, 11,829.71 and 2,621.62 is: 3,930.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,889.43 : 11,829.71 = 2,621.62 : x
  2. Step 2: Convert to fraction form
    7,889.43/11,829.71 = 2,621.62/x
  3. Step 3: Cross multiply
    7,889.43x = 11,829.71 × 2,621.62
  4. Step 4: Simplify right side
    7,889.43x = 31,012,991.22
  5. Step 5: Solve for x
    x = 31,012,991.22/7,889.43
  6. Step 6: Final answer
    x = 3,930.95

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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.