Home / 8,424.24-12,639.60-3,228.90

Finding the Fourth Proportional to 8,424.24, 12,639.60 and 3,228.90

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Solution

The fourth proportional to 8,424.24, 12,639.60 and 3,228.90 is: 4,844.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.24 : 12,639.60 = 3,228.90 : x
  2. Step 2: Convert to fraction form
    8,424.24/12,639.60 = 3,228.90/x
  3. Step 3: Cross multiply
    8,424.24x = 12,639.60 × 3,228.90
  4. Step 4: Simplify right side
    8,424.24x = 40,812,004.44
  5. Step 5: Solve for x
    x = 40,812,004.44/8,424.24
  6. Step 6: Final answer
    x = 4,844.59

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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.