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Finding the Fourth Proportional to 8,327.79, 12,491.55 and 3,948.39

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Solution

The fourth proportional to 8,327.79, 12,491.55 and 3,948.39 is: 5,922.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,327.79 : 12,491.55 = 3,948.39 : x
  2. Step 2: Convert to fraction form
    8,327.79/12,491.55 = 3,948.39/x
  3. Step 3: Cross multiply
    8,327.79x = 12,491.55 × 3,948.39
  4. Step 4: Simplify right side
    8,327.79x = 49,321,511.10
  5. Step 5: Solve for x
    x = 49,321,511.10/8,327.79
  6. Step 6: Final answer
    x = 5,922.52

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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.