Home / 8,185.85-12,260.32-5,408.70

Finding the Fourth Proportional to 8,185.85, 12,260.32 and 5,408.70

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Solution

The fourth proportional to 8,185.85, 12,260.32 and 5,408.70 is: 8,100.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,185.85 : 12,260.32 = 5,408.70 : x
  2. Step 2: Convert to fraction form
    8,185.85/12,260.32 = 5,408.70/x
  3. Step 3: Cross multiply
    8,185.85x = 12,260.32 × 5,408.70
  4. Step 4: Simplify right side
    8,185.85x = 66,312,392.78
  5. Step 5: Solve for x
    x = 66,312,392.78/8,185.85
  6. Step 6: Final answer
    x = 8,100.86

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1.5x scale

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.