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Finding the Fourth Proportional to 8,664.16, 12,995.03 and 3,116.70

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Solution

The fourth proportional to 8,664.16, 12,995.03 and 3,116.70 is: 4,674.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.16 : 12,995.03 = 3,116.70 : x
  2. Step 2: Convert to fraction form
    8,664.16/12,995.03 = 3,116.70/x
  3. Step 3: Cross multiply
    8,664.16x = 12,995.03 × 3,116.70
  4. Step 4: Simplify right side
    8,664.16x = 40,501,610.00
  5. Step 5: Solve for x
    x = 40,501,610.00/8,664.16
  6. Step 6: Final answer
    x = 4,674.61

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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.