Home / 5,819.87-8,727.69-2,121.23

Finding the Fourth Proportional to 5,819.87, 8,727.69 and 2,121.23

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Solution

The fourth proportional to 5,819.87, 8,727.69 and 2,121.23 is: 3,181.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,819.87 : 8,727.69 = 2,121.23 : x
  2. Step 2: Convert to fraction form
    5,819.87/8,727.69 = 2,121.23/x
  3. Step 3: Cross multiply
    5,819.87x = 8,727.69 × 2,121.23
  4. Step 4: Simplify right side
    5,819.87x = 18,513,467.63
  5. Step 5: Solve for x
    x = 18,513,467.63/5,819.87
  6. Step 6: Final answer
    x = 3,181.08

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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.