Home / 8,664.36-12,996.23-2,820.81

Finding the Fourth Proportional to 8,664.36, 12,996.23 and 2,820.81

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Solution

The fourth proportional to 8,664.36, 12,996.23 and 2,820.81 is: 4,231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.36 : 12,996.23 = 2,820.81 : x
  2. Step 2: Convert to fraction form
    8,664.36/12,996.23 = 2,820.81/x
  3. Step 3: Cross multiply
    8,664.36x = 12,996.23 × 2,820.81
  4. Step 4: Simplify right side
    8,664.36x = 36,659,895.55
  5. Step 5: Solve for x
    x = 36,659,895.55/8,664.36
  6. Step 6: Final answer
    x = 4,231.11

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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.