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Finding the Fourth Proportional to 7,162.92, 9,885 and 4,019.34

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Solution

The fourth proportional to 7,162.92, 9,885 and 4,019.34 is: 5,546.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,162.92 : 9,885 = 4,019.34 : x
  2. Step 2: Convert to fraction form
    7,162.92/9,885 = 4,019.34/x
  3. Step 3: Cross multiply
    7,162.92x = 9,885 × 4,019.34
  4. Step 4: Simplify right side
    7,162.92x = 39,731,175.90
  5. Step 5: Solve for x
    x = 39,731,175.90/7,162.92
  6. Step 6: Final answer
    x = 5,546.78

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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.