Home / 8,389.68-12,584.97-3,126.09

Finding the Fourth Proportional to 8,389.68, 12,584.97 and 3,126.09

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Solution

The fourth proportional to 8,389.68, 12,584.97 and 3,126.09 is: 4,689.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.68 : 12,584.97 = 3,126.09 : x
  2. Step 2: Convert to fraction form
    8,389.68/12,584.97 = 3,126.09/x
  3. Step 3: Cross multiply
    8,389.68x = 12,584.97 × 3,126.09
  4. Step 4: Simplify right side
    8,389.68x = 39,341,796.06
  5. Step 5: Solve for x
    x = 39,341,796.06/8,389.68
  6. Step 6: Final answer
    x = 4,689.31

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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.