Home / 8,664.96-12,998.36-2,820.81

Finding the Fourth Proportional to 8,664.96, 12,998.36 and 2,820.81

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Solution

The fourth proportional to 8,664.96, 12,998.36 and 2,820.81 is: 4,231.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.96 : 12,998.36 = 2,820.81 : x
  2. Step 2: Convert to fraction form
    8,664.96/12,998.36 = 2,820.81/x
  3. Step 3: Cross multiply
    8,664.96x = 12,998.36 × 2,820.81
  4. Step 4: Simplify right side
    8,664.96x = 36,665,903.87
  5. Step 5: Solve for x
    x = 36,665,903.87/8,664.96
  6. Step 6: Final answer
    x = 4,231.51

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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.