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Finding the Fourth Proportional to 8,991.66, 13,489.11 and 2,751.56

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Solution

The fourth proportional to 8,991.66, 13,489.11 and 2,751.56 is: 4,127.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.66 : 13,489.11 = 2,751.56 : x
  2. Step 2: Convert to fraction form
    8,991.66/13,489.11 = 2,751.56/x
  3. Step 3: Cross multiply
    8,991.66x = 13,489.11 × 2,751.56
  4. Step 4: Simplify right side
    8,991.66x = 37,116,095.51
  5. Step 5: Solve for x
    x = 37,116,095.51/8,991.66
  6. Step 6: Final answer
    x = 4,127.84

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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.