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Finding the Fourth Proportional to 8,729.79, 13,089.73 and 5,959.82

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Solution

The fourth proportional to 8,729.79, 13,089.73 and 5,959.82 is: 8,936.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.79 : 13,089.73 = 5,959.82 : x
  2. Step 2: Convert to fraction form
    8,729.79/13,089.73 = 5,959.82/x
  3. Step 3: Cross multiply
    8,729.79x = 13,089.73 × 5,959.82
  4. Step 4: Simplify right side
    8,729.79x = 78,012,434.65
  5. Step 5: Solve for x
    x = 78,012,434.65/8,729.79
  6. Step 6: Final answer
    x = 8,936.35

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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.