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Finding the Fourth Proportional to 8,479, 12,719.30 and 2,323

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Solution

The fourth proportional to 8,479, 12,719.30 and 2,323 is: 3,484.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479 : 12,719.30 = 2,323 : x
  2. Step 2: Convert to fraction form
    8,479/12,719.30 = 2,323/x
  3. Step 3: Cross multiply
    8,479x = 12,719.30 × 2,323
  4. Step 4: Simplify right side
    8,479x = 29,546,933.90
  5. Step 5: Solve for x
    x = 29,546,933.90/8,479
  6. Step 6: Final answer
    x = 3,484.72

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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.