Home / 8,664.48-12,998.88-2,821.68

Finding the Fourth Proportional to 8,664.48, 12,998.88 and 2,821.68

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Solution

The fourth proportional to 8,664.48, 12,998.88 and 2,821.68 is: 4,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.48 : 12,998.88 = 2,821.68 : x
  2. Step 2: Convert to fraction form
    8,664.48/12,998.88 = 2,821.68/x
  3. Step 3: Cross multiply
    8,664.48x = 12,998.88 × 2,821.68
  4. Step 4: Simplify right side
    8,664.48x = 36,678,679.72
  5. Step 5: Solve for x
    x = 36,678,679.72/8,664.48
  6. Step 6: Final answer
    x = 4,233.22

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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.