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Finding the Fourth Proportional to 5,351.40, 8,028.50 and 2,579.40

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Solution

The fourth proportional to 5,351.40, 8,028.50 and 2,579.40 is: 3,869.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,351.40 : 8,028.50 = 2,579.40 : x
  2. Step 2: Convert to fraction form
    5,351.40/8,028.50 = 2,579.40/x
  3. Step 3: Cross multiply
    5,351.40x = 8,028.50 × 2,579.40
  4. Step 4: Simplify right side
    5,351.40x = 20,708,700.00
  5. Step 5: Solve for x
    x = 20,708,700.00/5,351.40
  6. Step 6: Final answer
    x = 3,869.77

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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.