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Finding the Fourth Proportional to 7,133.92, 10,705.20 and 2,751.76

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Solution

The fourth proportional to 7,133.92, 10,705.20 and 2,751.76 is: 4,129.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,133.92 : 10,705.20 = 2,751.76 : x
  2. Step 2: Convert to fraction form
    7,133.92/10,705.20 = 2,751.76/x
  3. Step 3: Cross multiply
    7,133.92x = 10,705.20 × 2,751.76
  4. Step 4: Simplify right side
    7,133.92x = 29,458,141.15
  5. Step 5: Solve for x
    x = 29,458,141.15/7,133.92
  6. Step 6: Final answer
    x = 4,129.31

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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.