Home / 8,621.49-12,928.14-3,940.11

Finding the Fourth Proportional to 8,621.49, 12,928.14 and 3,940.11

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Solution

The fourth proportional to 8,621.49, 12,928.14 and 3,940.11 is: 5,908.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.49 : 12,928.14 = 3,940.11 : x
  2. Step 2: Convert to fraction form
    8,621.49/12,928.14 = 3,940.11/x
  3. Step 3: Cross multiply
    8,621.49x = 12,928.14 × 3,940.11
  4. Step 4: Simplify right side
    8,621.49x = 50,938,293.70
  5. Step 5: Solve for x
    x = 50,938,293.70/8,621.49
  6. Step 6: Final answer
    x = 5,908.29

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.