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Finding the Fourth Proportional to 8,455.59, 12,680.01 and 3,521.88

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Solution

The fourth proportional to 8,455.59, 12,680.01 and 3,521.88 is: 5,281.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.59 : 12,680.01 = 3,521.88 : x
  2. Step 2: Convert to fraction form
    8,455.59/12,680.01 = 3,521.88/x
  3. Step 3: Cross multiply
    8,455.59x = 12,680.01 × 3,521.88
  4. Step 4: Simplify right side
    8,455.59x = 44,657,473.62
  5. Step 5: Solve for x
    x = 44,657,473.62/8,455.59
  6. Step 6: Final answer
    x = 5,281.41

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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.