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Finding the Fourth Proportional to 8,467.54, 11,673.72 and 7,138.94

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Solution

The fourth proportional to 8,467.54, 11,673.72 and 7,138.94 is: 9,842.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,467.54 : 11,673.72 = 7,138.94 : x
  2. Step 2: Convert to fraction form
    8,467.54/11,673.72 = 7,138.94/x
  3. Step 3: Cross multiply
    8,467.54x = 11,673.72 × 7,138.94
  4. Step 4: Simplify right side
    8,467.54x = 83,337,928.29
  5. Step 5: Solve for x
    x = 83,337,928.29/8,467.54
  6. Step 6: Final answer
    x = 9,842.05

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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.