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Finding the Fourth Proportional to 5,324.67, 7,990.56 and 1,861.92

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Solution

The fourth proportional to 5,324.67, 7,990.56 and 1,861.92 is: 2,794.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,324.67 : 7,990.56 = 1,861.92 : x
  2. Step 2: Convert to fraction form
    5,324.67/7,990.56 = 1,861.92/x
  3. Step 3: Cross multiply
    5,324.67x = 7,990.56 × 1,861.92
  4. Step 4: Simplify right side
    5,324.67x = 14,877,783.48
  5. Step 5: Solve for x
    x = 14,877,783.48/5,324.67
  6. Step 6: Final answer
    x = 2,794.12

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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.