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Finding the Fourth Proportional to 8,991.82, 13,489.79 and 2,752.72

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Solution

The fourth proportional to 8,991.82, 13,489.79 and 2,752.72 is: 4,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.82 : 13,489.79 = 2,752.72 : x
  2. Step 2: Convert to fraction form
    8,991.82/13,489.79 = 2,752.72/x
  3. Step 3: Cross multiply
    8,991.82x = 13,489.79 × 2,752.72
  4. Step 4: Simplify right side
    8,991.82x = 37,133,567.24
  5. Step 5: Solve for x
    x = 37,133,567.24/8,991.82
  6. Step 6: Final answer
    x = 4,129.70

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1.5x scale

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.