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Finding the Fourth Proportional to 3,991.94, 5,981.74 and 2,528.01

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Solution

The fourth proportional to 3,991.94, 5,981.74 and 2,528.01 is: 3,788.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.94 : 5,981.74 = 2,528.01 : x
  2. Step 2: Convert to fraction form
    3,991.94/5,981.74 = 2,528.01/x
  3. Step 3: Cross multiply
    3,991.94x = 5,981.74 × 2,528.01
  4. Step 4: Simplify right side
    3,991.94x = 15,121,917.65
  5. Step 5: Solve for x
    x = 15,121,917.65/3,991.94
  6. Step 6: Final answer
    x = 3,788.12

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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.