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Finding the Fourth Proportional to 8,682.80, 13,032.88 and 4,789.04

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Solution

The fourth proportional to 8,682.80, 13,032.88 and 4,789.04 is: 7,188.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.80 : 13,032.88 = 4,789.04 : x
  2. Step 2: Convert to fraction form
    8,682.80/13,032.88 = 4,789.04/x
  3. Step 3: Cross multiply
    8,682.80x = 13,032.88 × 4,789.04
  4. Step 4: Simplify right side
    8,682.80x = 62,414,983.64
  5. Step 5: Solve for x
    x = 62,414,983.64/8,682.80
  6. Step 6: Final answer
    x = 7,188.35

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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.