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Finding the Fourth Proportional to 8,324.78, 12,491.98 and 4,626.70

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Solution

The fourth proportional to 8,324.78, 12,491.98 and 4,626.70 is: 6,942.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,324.78 : 12,491.98 = 4,626.70 : x
  2. Step 2: Convert to fraction form
    8,324.78/12,491.98 = 4,626.70/x
  3. Step 3: Cross multiply
    8,324.78x = 12,491.98 × 4,626.70
  4. Step 4: Simplify right side
    8,324.78x = 57,796,643.87
  5. Step 5: Solve for x
    x = 57,796,643.87/8,324.78
  6. Step 6: Final answer
    x = 6,942.72

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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.