Home / 8,819.21-13,228.68-3,621.44

Finding the Fourth Proportional to 8,819.21, 13,228.68 and 3,621.44

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Solution

The fourth proportional to 8,819.21, 13,228.68 and 3,621.44 is: 5,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,819.21 : 13,228.68 = 3,621.44 : x
  2. Step 2: Convert to fraction form
    8,819.21/13,228.68 = 3,621.44/x
  3. Step 3: Cross multiply
    8,819.21x = 13,228.68 × 3,621.44
  4. Step 4: Simplify right side
    8,819.21x = 47,906,870.90
  5. Step 5: Solve for x
    x = 47,906,870.90/8,819.21
  6. Step 6: Final answer
    x = 5,432.10

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1.5x scale

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.