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Finding the Fourth Proportional to 6,167.80, 8,512.50 and 3,930.58

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Solution

The fourth proportional to 6,167.80, 8,512.50 and 3,930.58 is: 5,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,167.80 : 8,512.50 = 3,930.58 : x
  2. Step 2: Convert to fraction form
    6,167.80/8,512.50 = 3,930.58/x
  3. Step 3: Cross multiply
    6,167.80x = 8,512.50 × 3,930.58
  4. Step 4: Simplify right side
    6,167.80x = 33,459,062.25
  5. Step 5: Solve for x
    x = 33,459,062.25/6,167.80
  6. Step 6: Final answer
    x = 5,424.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.