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Finding the Fourth Proportional to 5,861, 8,789.16 and 2,162.72

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Solution

The fourth proportional to 5,861, 8,789.16 and 2,162.72 is: 3,243.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861 : 8,789.16 = 2,162.72 : x
  2. Step 2: Convert to fraction form
    5,861/8,789.16 = 2,162.72/x
  3. Step 3: Cross multiply
    5,861x = 8,789.16 × 2,162.72
  4. Step 4: Simplify right side
    5,861x = 19,008,492.12
  5. Step 5: Solve for x
    x = 19,008,492.12/5,861
  6. Step 6: Final answer
    x = 3,243.22

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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.