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Finding the Fourth Proportional to 7,279, 10,918.86 and 2,348.28

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Solution

The fourth proportional to 7,279, 10,918.86 and 2,348.28 is: 3,522.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279 : 10,918.86 = 2,348.28 : x
  2. Step 2: Convert to fraction form
    7,279/10,918.86 = 2,348.28/x
  3. Step 3: Cross multiply
    7,279x = 10,918.86 × 2,348.28
  4. Step 4: Simplify right side
    7,279x = 25,640,540.56
  5. Step 5: Solve for x
    x = 25,640,540.56/7,279
  6. Step 6: Final answer
    x = 3,522.54

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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.