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Finding the Fourth Proportional to 6,279.80, 9,424.38 and 2,391.80

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Solution

The fourth proportional to 6,279.80, 9,424.38 and 2,391.80 is: 3,589.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.80 : 9,424.38 = 2,391.80 : x
  2. Step 2: Convert to fraction form
    6,279.80/9,424.38 = 2,391.80/x
  3. Step 3: Cross multiply
    6,279.80x = 9,424.38 × 2,391.80
  4. Step 4: Simplify right side
    6,279.80x = 22,541,232.08
  5. Step 5: Solve for x
    x = 22,541,232.08/6,279.80
  6. Step 6: Final answer
    x = 3,589.48

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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.