Home / 8,619.39-12,929.13-3,425.28

Finding the Fourth Proportional to 8,619.39, 12,929.13 and 3,425.28

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Solution

The fourth proportional to 8,619.39, 12,929.13 and 3,425.28 is: 5,137.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.39 : 12,929.13 = 3,425.28 : x
  2. Step 2: Convert to fraction form
    8,619.39/12,929.13 = 3,425.28/x
  3. Step 3: Cross multiply
    8,619.39x = 12,929.13 × 3,425.28
  4. Step 4: Simplify right side
    8,619.39x = 44,285,890.41
  5. Step 5: Solve for x
    x = 44,285,890.41/8,619.39
  6. Step 6: Final answer
    x = 5,137.94

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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.