Home / 8,625.27-12,939.65-3,078.47

Finding the Fourth Proportional to 8,625.27, 12,939.65 and 3,078.47

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Solution

The fourth proportional to 8,625.27, 12,939.65 and 3,078.47 is: 4,618.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.27 : 12,939.65 = 3,078.47 : x
  2. Step 2: Convert to fraction form
    8,625.27/12,939.65 = 3,078.47/x
  3. Step 3: Cross multiply
    8,625.27x = 12,939.65 × 3,078.47
  4. Step 4: Simplify right side
    8,625.27x = 39,834,353.57
  5. Step 5: Solve for x
    x = 39,834,353.57/8,625.27
  6. Step 6: Final answer
    x = 4,618.33

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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.