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Finding the Fourth Proportional to 8,655.85, 11,940.85 and 5,467.61

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Solution

The fourth proportional to 8,655.85, 11,940.85 and 5,467.61 is: 7,542.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.85 : 11,940.85 = 5,467.61 : x
  2. Step 2: Convert to fraction form
    8,655.85/11,940.85 = 5,467.61/x
  3. Step 3: Cross multiply
    8,655.85x = 11,940.85 × 5,467.61
  4. Step 4: Simplify right side
    8,655.85x = 65,287,952.81
  5. Step 5: Solve for x
    x = 65,287,952.81/8,655.85
  6. Step 6: Final answer
    x = 7,542.64

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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.