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Finding the Fourth Proportional to 8,479.63, 12,719.46 and 2,636.24

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Solution

The fourth proportional to 8,479.63, 12,719.46 and 2,636.24 is: 3,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.63 : 12,719.46 = 2,636.24 : x
  2. Step 2: Convert to fraction form
    8,479.63/12,719.46 = 2,636.24/x
  3. Step 3: Cross multiply
    8,479.63x = 12,719.46 × 2,636.24
  4. Step 4: Simplify right side
    8,479.63x = 33,531,549.23
  5. Step 5: Solve for x
    x = 33,531,549.23/8,479.63
  6. Step 6: Final answer
    x = 3,954.37

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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.