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Finding the Fourth Proportional to 8,659.96, 12,993.04 and 2,816.60

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Solution

The fourth proportional to 8,659.96, 12,993.04 and 2,816.60 is: 4,225.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.96 : 12,993.04 = 2,816.60 : x
  2. Step 2: Convert to fraction form
    8,659.96/12,993.04 = 2,816.60/x
  3. Step 3: Cross multiply
    8,659.96x = 12,993.04 × 2,816.60
  4. Step 4: Simplify right side
    8,659.96x = 36,596,196.46
  5. Step 5: Solve for x
    x = 36,596,196.46/8,659.96
  6. Step 6: Final answer
    x = 4,225.91

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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.