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Finding the Fourth Proportional to 5,329.94, 7,987.94 and 2,861.87

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Solution

The fourth proportional to 5,329.94, 7,987.94 and 2,861.87 is: 4,289.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,329.94 : 7,987.94 = 2,861.87 : x
  2. Step 2: Convert to fraction form
    5,329.94/7,987.94 = 2,861.87/x
  3. Step 3: Cross multiply
    5,329.94x = 7,987.94 × 2,861.87
  4. Step 4: Simplify right side
    5,329.94x = 22,860,391.60
  5. Step 5: Solve for x
    x = 22,860,391.60/5,329.94
  6. Step 6: Final answer
    x = 4,289.06

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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.