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Finding the Fourth Proportional to 8,479.97, 12,722.45 and 3,798.94

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Solution

The fourth proportional to 8,479.97, 12,722.45 and 3,798.94 is: 5,699.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.97 : 12,722.45 = 3,798.94 : x
  2. Step 2: Convert to fraction form
    8,479.97/12,722.45 = 3,798.94/x
  3. Step 3: Cross multiply
    8,479.97x = 12,722.45 × 3,798.94
  4. Step 4: Simplify right side
    8,479.97x = 48,331,797.26
  5. Step 5: Solve for x
    x = 48,331,797.26/8,479.97
  6. Step 6: Final answer
    x = 5,699.52

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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.