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Finding the Fourth Proportional to 7,167.36, 9,889.92 and 4,022.72

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Solution

The fourth proportional to 7,167.36, 9,889.92 and 4,022.72 is: 5,550.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,167.36 : 9,889.92 = 4,022.72 : x
  2. Step 2: Convert to fraction form
    7,167.36/9,889.92 = 4,022.72/x
  3. Step 3: Cross multiply
    7,167.36x = 9,889.92 × 4,022.72
  4. Step 4: Simplify right side
    7,167.36x = 39,784,378.98
  5. Step 5: Solve for x
    x = 39,784,378.98/7,167.36
  6. Step 6: Final answer
    x = 5,550.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.