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Finding the Fourth Proportional to 8,477.79, 12,721.39 and 3,797.61

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Solution

The fourth proportional to 8,477.79, 12,721.39 and 3,797.61 is: 5,698.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,477.79 : 12,721.39 = 3,797.61 : x
  2. Step 2: Convert to fraction form
    8,477.79/12,721.39 = 3,797.61/x
  3. Step 3: Cross multiply
    8,477.79x = 12,721.39 × 3,797.61
  4. Step 4: Simplify right side
    8,477.79x = 48,310,877.88
  5. Step 5: Solve for x
    x = 48,310,877.88/8,477.79
  6. Step 6: Final answer
    x = 5,698.52

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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.