Home / 8,257.95-12,385.37-3,815.43

Finding the Fourth Proportional to 8,257.95, 12,385.37 and 3,815.43

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Solution

The fourth proportional to 8,257.95, 12,385.37 and 3,815.43 is: 5,722.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257.95 : 12,385.37 = 3,815.43 : x
  2. Step 2: Convert to fraction form
    8,257.95/12,385.37 = 3,815.43/x
  3. Step 3: Cross multiply
    8,257.95x = 12,385.37 × 3,815.43
  4. Step 4: Simplify right side
    8,257.95x = 47,255,461.04
  5. Step 5: Solve for x
    x = 47,255,461.04/8,257.95
  6. Step 6: Final answer
    x = 5,722.42

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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.