Home / 8,418.89-12,616.99-3,221.93

Finding the Fourth Proportional to 8,418.89, 12,616.99 and 3,221.93

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Solution

The fourth proportional to 8,418.89, 12,616.99 and 3,221.93 is: 4,828.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.89 : 12,616.99 = 3,221.93 : x
  2. Step 2: Convert to fraction form
    8,418.89/12,616.99 = 3,221.93/x
  3. Step 3: Cross multiply
    8,418.89x = 12,616.99 × 3,221.93
  4. Step 4: Simplify right side
    8,418.89x = 40,651,058.59
  5. Step 5: Solve for x
    x = 40,651,058.59/8,418.89
  6. Step 6: Final answer
    x = 4,828.55

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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.