Home / 8,438.11-12,657.77-3,243.98

Finding the Fourth Proportional to 8,438.11, 12,657.77 and 3,243.98

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Solution

The fourth proportional to 8,438.11, 12,657.77 and 3,243.98 is: 4,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.11 : 12,657.77 = 3,243.98 : x
  2. Step 2: Convert to fraction form
    8,438.11/12,657.77 = 3,243.98/x
  3. Step 3: Cross multiply
    8,438.11x = 12,657.77 × 3,243.98
  4. Step 4: Simplify right side
    8,438.11x = 41,061,552.72
  5. Step 5: Solve for x
    x = 41,061,552.72/8,438.11
  6. Step 6: Final answer
    x = 4,866.20

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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.