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Finding the Fourth Proportional to 5,605.05, 8,405.70 and 2,829.96

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Solution

The fourth proportional to 5,605.05, 8,405.70 and 2,829.96 is: 4,243.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,605.05 : 8,405.70 = 2,829.96 : x
  2. Step 2: Convert to fraction form
    5,605.05/8,405.70 = 2,829.96/x
  3. Step 3: Cross multiply
    5,605.05x = 8,405.70 × 2,829.96
  4. Step 4: Simplify right side
    5,605.05x = 23,787,794.77
  5. Step 5: Solve for x
    x = 23,787,794.77/5,605.05
  6. Step 6: Final answer
    x = 4,243.99

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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.