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Finding the Fourth Proportional to 8,473.80, 12,698.21 and 4,720.41

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Solution

The fourth proportional to 8,473.80, 12,698.21 and 4,720.41 is: 7,073.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,473.80 : 12,698.21 = 4,720.41 : x
  2. Step 2: Convert to fraction form
    8,473.80/12,698.21 = 4,720.41/x
  3. Step 3: Cross multiply
    8,473.80x = 12,698.21 × 4,720.41
  4. Step 4: Simplify right side
    8,473.80x = 59,940,757.47
  5. Step 5: Solve for x
    x = 59,940,757.47/8,473.80
  6. Step 6: Final answer
    x = 7,073.66

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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.