Home / 8,664.76-12,999.66-3,118

Finding the Fourth Proportional to 8,664.76, 12,999.66 and 3,118

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Solution

The fourth proportional to 8,664.76, 12,999.66 and 3,118 is: 4,677.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.76 : 12,999.66 = 3,118 : x
  2. Step 2: Convert to fraction form
    8,664.76/12,999.66 = 3,118/x
  3. Step 3: Cross multiply
    8,664.76x = 12,999.66 × 3,118
  4. Step 4: Simplify right side
    8,664.76x = 40,532,939.88
  5. Step 5: Solve for x
    x = 40,532,939.88/8,664.76
  6. Step 6: Final answer
    x = 4,677.91

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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.