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Finding the Fourth Proportional to 8,664.96, 12,985.20 and 6,708

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Solution

The fourth proportional to 8,664.96, 12,985.20 and 6,708 is: 10,052.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.96 : 12,985.20 = 6,708 : x
  2. Step 2: Convert to fraction form
    8,664.96/12,985.20 = 6,708/x
  3. Step 3: Cross multiply
    8,664.96x = 12,985.20 × 6,708
  4. Step 4: Simplify right side
    8,664.96x = 87,104,721.60
  5. Step 5: Solve for x
    x = 87,104,721.60/8,664.96
  6. Step 6: Final answer
    x = 10,052.52

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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.