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Finding the Fourth Proportional to 5,328.85, 7,992.86 and 1,631.11

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Solution

The fourth proportional to 5,328.85, 7,992.86 and 1,631.11 is: 2,446.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.85 : 7,992.86 = 1,631.11 : x
  2. Step 2: Convert to fraction form
    5,328.85/7,992.86 = 1,631.11/x
  3. Step 3: Cross multiply
    5,328.85x = 7,992.86 × 1,631.11
  4. Step 4: Simplify right side
    5,328.85x = 13,037,233.87
  5. Step 5: Solve for x
    x = 13,037,233.87/5,328.85
  6. Step 6: Final answer
    x = 2,446.54

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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.