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Finding the Fourth Proportional to 5,327.87, 7,986.62 and 2,988.99

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Solution

The fourth proportional to 5,327.87, 7,986.62 and 2,988.99 is: 4,480.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,327.87 : 7,986.62 = 2,988.99 : x
  2. Step 2: Convert to fraction form
    5,327.87/7,986.62 = 2,988.99/x
  3. Step 3: Cross multiply
    5,327.87x = 7,986.62 × 2,988.99
  4. Step 4: Simplify right side
    5,327.87x = 23,871,912.37
  5. Step 5: Solve for x
    x = 23,871,912.37/5,327.87
  6. Step 6: Final answer
    x = 4,480.58

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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.