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Finding the Fourth Proportional to 6,993.72, 10,491.12 and 4,223.52

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Solution

The fourth proportional to 6,993.72, 10,491.12 and 4,223.52 is: 6,335.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,993.72 : 10,491.12 = 4,223.52 : x
  2. Step 2: Convert to fraction form
    6,993.72/10,491.12 = 4,223.52/x
  3. Step 3: Cross multiply
    6,993.72x = 10,491.12 × 4,223.52
  4. Step 4: Simplify right side
    6,993.72x = 44,309,455.14
  5. Step 5: Solve for x
    x = 44,309,455.14/6,993.72
  6. Step 6: Final answer
    x = 6,335.61

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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.