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Finding the Fourth Proportional to 4,279.14, 5,921.42 and 3,648.69

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Solution

The fourth proportional to 4,279.14, 5,921.42 and 3,648.69 is: 5,049.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.14 : 5,921.42 = 3,648.69 : x
  2. Step 2: Convert to fraction form
    4,279.14/5,921.42 = 3,648.69/x
  3. Step 3: Cross multiply
    4,279.14x = 5,921.42 × 3,648.69
  4. Step 4: Simplify right side
    4,279.14x = 21,605,407.70
  5. Step 5: Solve for x
    x = 21,605,407.70/4,279.14
  6. Step 6: Final answer
    x = 5,049.01

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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.