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Finding the Fourth Proportional to 5,581.65, 8,362.62 and 3,385.92

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Solution

The fourth proportional to 5,581.65, 8,362.62 and 3,385.92 is: 5,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.65 : 8,362.62 = 3,385.92 : x
  2. Step 2: Convert to fraction form
    5,581.65/8,362.62 = 3,385.92/x
  3. Step 3: Cross multiply
    5,581.65x = 8,362.62 × 3,385.92
  4. Step 4: Simplify right side
    5,581.65x = 28,315,162.31
  5. Step 5: Solve for x
    x = 28,315,162.31/5,581.65
  6. Step 6: Final answer
    x = 5,072.90

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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.