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Finding the Fourth Proportional to 8,339.63, 12,515.58 and 3,957.09

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Solution

The fourth proportional to 8,339.63, 12,515.58 and 3,957.09 is: 5,938.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.63 : 12,515.58 = 3,957.09 : x
  2. Step 2: Convert to fraction form
    8,339.63/12,515.58 = 3,957.09/x
  3. Step 3: Cross multiply
    8,339.63x = 12,515.58 × 3,957.09
  4. Step 4: Simplify right side
    8,339.63x = 49,525,229.53
  5. Step 5: Solve for x
    x = 49,525,229.53/8,339.63
  6. Step 6: Final answer
    x = 5,938.54

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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.