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Finding the Fourth Proportional to 5,328.99, 7,991.46 and 2,552.72

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Solution

The fourth proportional to 5,328.99, 7,991.46 and 2,552.72 is: 3,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.99 : 7,991.46 = 2,552.72 : x
  2. Step 2: Convert to fraction form
    5,328.99/7,991.46 = 2,552.72/x
  3. Step 3: Cross multiply
    5,328.99x = 7,991.46 × 2,552.72
  4. Step 4: Simplify right side
    5,328.99x = 20,399,919.81
  5. Step 5: Solve for x
    x = 20,399,919.81/5,328.99
  6. Step 6: Final answer
    x = 3,828.10

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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.