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Finding the Fourth Proportional to 8,405.50, 12,599.70 and 3,477.82

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Solution

The fourth proportional to 8,405.50, 12,599.70 and 3,477.82 is: 5,213.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.50 : 12,599.70 = 3,477.82 : x
  2. Step 2: Convert to fraction form
    8,405.50/12,599.70 = 3,477.82/x
  3. Step 3: Cross multiply
    8,405.50x = 12,599.70 × 3,477.82
  4. Step 4: Simplify right side
    8,405.50x = 43,819,488.65
  5. Step 5: Solve for x
    x = 43,819,488.65/8,405.50
  6. Step 6: Final answer
    x = 5,213.19

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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.