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Finding the Fourth Proportional to 7,279.84, 10,920.47 and 2,896.33

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Solution

The fourth proportional to 7,279.84, 10,920.47 and 2,896.33 is: 4,344.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.84 : 10,920.47 = 2,896.33 : x
  2. Step 2: Convert to fraction form
    7,279.84/10,920.47 = 2,896.33/x
  3. Step 3: Cross multiply
    7,279.84x = 10,920.47 × 2,896.33
  4. Step 4: Simplify right side
    7,279.84x = 31,629,284.88
  5. Step 5: Solve for x
    x = 31,629,284.88/7,279.84
  6. Step 6: Final answer
    x = 4,344.78

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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.