Home / 8,364.20-12,546.30-2,815.70

Finding the Fourth Proportional to 8,364.20, 12,546.30 and 2,815.70

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Solution

The fourth proportional to 8,364.20, 12,546.30 and 2,815.70 is: 4,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.20 : 12,546.30 = 2,815.70 : x
  2. Step 2: Convert to fraction form
    8,364.20/12,546.30 = 2,815.70/x
  3. Step 3: Cross multiply
    8,364.20x = 12,546.30 × 2,815.70
  4. Step 4: Simplify right side
    8,364.20x = 35,326,616.91
  5. Step 5: Solve for x
    x = 35,326,616.91/8,364.20
  6. Step 6: Final answer
    x = 4,223.55

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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.