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Finding the Fourth Proportional to 7,491.62, 11,238.86 and 2,874.26

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Solution

The fourth proportional to 7,491.62, 11,238.86 and 2,874.26 is: 4,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,491.62 : 11,238.86 = 2,874.26 : x
  2. Step 2: Convert to fraction form
    7,491.62/11,238.86 = 2,874.26/x
  3. Step 3: Cross multiply
    7,491.62x = 11,238.86 × 2,874.26
  4. Step 4: Simplify right side
    7,491.62x = 32,303,405.74
  5. Step 5: Solve for x
    x = 32,303,405.74/7,491.62
  6. Step 6: Final answer
    x = 4,311.94

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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.