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Finding the Fourth Proportional to 5,076.79, 7,619.03 and 2,157.14

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Solution

The fourth proportional to 5,076.79, 7,619.03 and 2,157.14 is: 3,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,076.79 : 7,619.03 = 2,157.14 : x
  2. Step 2: Convert to fraction form
    5,076.79/7,619.03 = 2,157.14/x
  3. Step 3: Cross multiply
    5,076.79x = 7,619.03 × 2,157.14
  4. Step 4: Simplify right side
    5,076.79x = 16,435,314.37
  5. Step 5: Solve for x
    x = 16,435,314.37/5,076.79
  6. Step 6: Final answer
    x = 3,237.34

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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.