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Finding the Fourth Proportional to 2,798.86, 3,861.63 and 1,804.48

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Solution

The fourth proportional to 2,798.86, 3,861.63 and 1,804.48 is: 2,489.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.86 : 3,861.63 = 1,804.48 : x
  2. Step 2: Convert to fraction form
    2,798.86/3,861.63 = 1,804.48/x
  3. Step 3: Cross multiply
    2,798.86x = 3,861.63 × 1,804.48
  4. Step 4: Simplify right side
    2,798.86x = 6,968,234.10
  5. Step 5: Solve for x
    x = 6,968,234.10/2,798.86
  6. Step 6: Final answer
    x = 2,489.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.