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Finding the Fourth Proportional to 8,686.62, 13,022.59 and 5,905.48

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Solution

The fourth proportional to 8,686.62, 13,022.59 and 5,905.48 is: 8,853.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.62 : 13,022.59 = 5,905.48 : x
  2. Step 2: Convert to fraction form
    8,686.62/13,022.59 = 5,905.48/x
  3. Step 3: Cross multiply
    8,686.62x = 13,022.59 × 5,905.48
  4. Step 4: Simplify right side
    8,686.62x = 76,904,644.79
  5. Step 5: Solve for x
    x = 76,904,644.79/8,686.62
  6. Step 6: Final answer
    x = 8,853.23

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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.