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Finding the Fourth Proportional to 8,479.57, 12,719.51 and 2,636.34

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Solution

The fourth proportional to 8,479.57, 12,719.51 and 2,636.34 is: 3,954.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.57 : 12,719.51 = 2,636.34 : x
  2. Step 2: Convert to fraction form
    8,479.57/12,719.51 = 2,636.34/x
  3. Step 3: Cross multiply
    8,479.57x = 12,719.51 × 2,636.34
  4. Step 4: Simplify right side
    8,479.57x = 33,532,952.99
  5. Step 5: Solve for x
    x = 33,532,952.99/8,479.57
  6. Step 6: Final answer
    x = 3,954.56

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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.