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Finding the Fourth Proportional to 8,991.63, 13,486.77 and 2,751.66

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Solution

The fourth proportional to 8,991.63, 13,486.77 and 2,751.66 is: 4,127.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.63 : 13,486.77 = 2,751.66 : x
  2. Step 2: Convert to fraction form
    8,991.63/13,486.77 = 2,751.66/x
  3. Step 3: Cross multiply
    8,991.63x = 13,486.77 × 2,751.66
  4. Step 4: Simplify right side
    8,991.63x = 37,111,005.54
  5. Step 5: Solve for x
    x = 37,111,005.54/8,991.63
  6. Step 6: Final answer
    x = 4,127.28

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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.