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Finding the Fourth Proportional to 7,273.92, 10,914.80 and 2,891.42

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Solution

The fourth proportional to 7,273.92, 10,914.80 and 2,891.42 is: 4,338.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,273.92 : 10,914.80 = 2,891.42 : x
  2. Step 2: Convert to fraction form
    7,273.92/10,914.80 = 2,891.42/x
  3. Step 3: Cross multiply
    7,273.92x = 10,914.80 × 2,891.42
  4. Step 4: Simplify right side
    7,273.92x = 31,559,256.56
  5. Step 5: Solve for x
    x = 31,559,256.56/7,273.92
  6. Step 6: Final answer
    x = 4,338.69

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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.