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Finding the Fourth Proportional to 8,722.72, 12,036.87 and 4,743.82

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Solution

The fourth proportional to 8,722.72, 12,036.87 and 4,743.82 is: 6,546.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.72 : 12,036.87 = 4,743.82 : x
  2. Step 2: Convert to fraction form
    8,722.72/12,036.87 = 4,743.82/x
  3. Step 3: Cross multiply
    8,722.72x = 12,036.87 × 4,743.82
  4. Step 4: Simplify right side
    8,722.72x = 57,100,744.64
  5. Step 5: Solve for x
    x = 57,100,744.64/8,722.72
  6. Step 6: Final answer
    x = 6,546.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.