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Finding the Fourth Proportional to 8,659.65, 12,968.85 and 5,529.96

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Solution

The fourth proportional to 8,659.65, 12,968.85 and 5,529.96 is: 8,281.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.65 : 12,968.85 = 5,529.96 : x
  2. Step 2: Convert to fraction form
    8,659.65/12,968.85 = 5,529.96/x
  3. Step 3: Cross multiply
    8,659.65x = 12,968.85 × 5,529.96
  4. Step 4: Simplify right side
    8,659.65x = 71,717,189.32
  5. Step 5: Solve for x
    x = 71,717,189.32/8,659.65
  6. Step 6: Final answer
    x = 8,281.77

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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.