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Finding the Fourth Proportional to 8,579.19, 12,859.21 and 3,892.17

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Solution

The fourth proportional to 8,579.19, 12,859.21 and 3,892.17 is: 5,833.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.19 : 12,859.21 = 3,892.17 : x
  2. Step 2: Convert to fraction form
    8,579.19/12,859.21 = 3,892.17/x
  3. Step 3: Cross multiply
    8,579.19x = 12,859.21 × 3,892.17
  4. Step 4: Simplify right side
    8,579.19x = 50,050,231.39
  5. Step 5: Solve for x
    x = 50,050,231.39/8,579.19
  6. Step 6: Final answer
    x = 5,833.91

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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.