Home / 5,278.70-7,279.62-3,937.27

Finding the Fourth Proportional to 5,278.70, 7,279.62 and 3,937.27

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Solution

The fourth proportional to 5,278.70, 7,279.62 and 3,937.27 is: 5,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.70 : 7,279.62 = 3,937.27 : x
  2. Step 2: Convert to fraction form
    5,278.70/7,279.62 = 3,937.27/x
  3. Step 3: Cross multiply
    5,278.70x = 7,279.62 × 3,937.27
  4. Step 4: Simplify right side
    5,278.70x = 28,661,829.44
  5. Step 5: Solve for x
    x = 28,661,829.44/5,278.70
  6. Step 6: Final answer
    x = 5,429.71

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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.