Home / 8,438.90-12,657.24-2,199.37

Finding the Fourth Proportional to 8,438.90, 12,657.24 and 2,199.37

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Solution

The fourth proportional to 8,438.90, 12,657.24 and 2,199.37 is: 3,298.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.90 : 12,657.24 = 2,199.37 : x
  2. Step 2: Convert to fraction form
    8,438.90/12,657.24 = 2,199.37/x
  3. Step 3: Cross multiply
    8,438.90x = 12,657.24 × 2,199.37
  4. Step 4: Simplify right side
    8,438.90x = 27,837,890.65
  5. Step 5: Solve for x
    x = 27,837,890.65/8,438.90
  6. Step 6: Final answer
    x = 3,298.76

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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.