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Finding the Fourth Proportional to 5,861.87, 8,089.81 and 3,868.97

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Solution

The fourth proportional to 5,861.87, 8,089.81 and 3,868.97 is: 5,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861.87 : 8,089.81 = 3,868.97 : x
  2. Step 2: Convert to fraction form
    5,861.87/8,089.81 = 3,868.97/x
  3. Step 3: Cross multiply
    5,861.87x = 8,089.81 × 3,868.97
  4. Step 4: Simplify right side
    5,861.87x = 31,299,182.07
  5. Step 5: Solve for x
    x = 31,299,182.07/5,861.87
  6. Step 6: Final answer
    x = 5,339.45

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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.