Home / 8,418.47-12,633.98-3,158.33

Finding the Fourth Proportional to 8,418.47, 12,633.98 and 3,158.33

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Solution

The fourth proportional to 8,418.47, 12,633.98 and 3,158.33 is: 4,739.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.47 : 12,633.98 = 3,158.33 : x
  2. Step 2: Convert to fraction form
    8,418.47/12,633.98 = 3,158.33/x
  3. Step 3: Cross multiply
    8,418.47x = 12,633.98 × 3,158.33
  4. Step 4: Simplify right side
    8,418.47x = 39,902,199.09
  5. Step 5: Solve for x
    x = 39,902,199.09/8,418.47
  6. Step 6: Final answer
    x = 4,739.84

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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.