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Finding the Fourth Proportional to 8,606.61, 11,872.08 and 5,414.87

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Solution

The fourth proportional to 8,606.61, 11,872.08 and 5,414.87 is: 7,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.61 : 11,872.08 = 5,414.87 : x
  2. Step 2: Convert to fraction form
    8,606.61/11,872.08 = 5,414.87/x
  3. Step 3: Cross multiply
    8,606.61x = 11,872.08 × 5,414.87
  4. Step 4: Simplify right side
    8,606.61x = 64,285,710.47
  5. Step 5: Solve for x
    x = 64,285,710.47/8,606.61
  6. Step 6: Final answer
    x = 7,469.34

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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.