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Finding the Fourth Proportional to 5,007.40, 7,491.90 and 3,279.40

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Solution

The fourth proportional to 5,007.40, 7,491.90 and 3,279.40 is: 4,906.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,007.40 : 7,491.90 = 3,279.40 : x
  2. Step 2: Convert to fraction form
    5,007.40/7,491.90 = 3,279.40/x
  3. Step 3: Cross multiply
    5,007.40x = 7,491.90 × 3,279.40
  4. Step 4: Simplify right side
    5,007.40x = 24,568,936.86
  5. Step 5: Solve for x
    x = 24,568,936.86/5,007.40
  6. Step 6: Final answer
    x = 4,906.53

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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.