Home / 8,621.33-12,928.68-3,355.65

Finding the Fourth Proportional to 8,621.33, 12,928.68 and 3,355.65

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Solution

The fourth proportional to 8,621.33, 12,928.68 and 3,355.65 is: 5,032.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.33 : 12,928.68 = 3,355.65 : x
  2. Step 2: Convert to fraction form
    8,621.33/12,928.68 = 3,355.65/x
  3. Step 3: Cross multiply
    8,621.33x = 12,928.68 × 3,355.65
  4. Step 4: Simplify right side
    8,621.33x = 43,384,125.04
  5. Step 5: Solve for x
    x = 43,384,125.04/8,621.33
  6. Step 6: Final answer
    x = 5,032.19

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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.