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Finding the Fourth Proportional to 7,894.96, 11,832.89 and 3,450.70

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Solution

The fourth proportional to 7,894.96, 11,832.89 and 3,450.70 is: 5,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894.96 : 11,832.89 = 3,450.70 : x
  2. Step 2: Convert to fraction form
    7,894.96/11,832.89 = 3,450.70/x
  3. Step 3: Cross multiply
    7,894.96x = 11,832.89 × 3,450.70
  4. Step 4: Simplify right side
    7,894.96x = 40,831,821.26
  5. Step 5: Solve for x
    x = 40,831,821.26/7,894.96
  6. Step 6: Final answer
    x = 5,171.89

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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.