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Finding the Fourth Proportional to 7,993.67, 11,993.96 and 4,291.58

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Solution

The fourth proportional to 7,993.67, 11,993.96 and 4,291.58 is: 6,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.67 : 11,993.96 = 4,291.58 : x
  2. Step 2: Convert to fraction form
    7,993.67/11,993.96 = 4,291.58/x
  3. Step 3: Cross multiply
    7,993.67x = 11,993.96 × 4,291.58
  4. Step 4: Simplify right side
    7,993.67x = 51,473,038.86
  5. Step 5: Solve for x
    x = 51,473,038.86/7,993.67
  6. Step 6: Final answer
    x = 6,439.22

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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.