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Finding the Fourth Proportional to 8,838.42, 12,188.64 and 5,808.21

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Solution

The fourth proportional to 8,838.42, 12,188.64 and 5,808.21 is: 8,009.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,838.42 : 12,188.64 = 5,808.21 : x
  2. Step 2: Convert to fraction form
    8,838.42/12,188.64 = 5,808.21/x
  3. Step 3: Cross multiply
    8,838.42x = 12,188.64 × 5,808.21
  4. Step 4: Simplify right side
    8,838.42x = 70,794,180.73
  5. Step 5: Solve for x
    x = 70,794,180.73/8,838.42
  6. Step 6: Final answer
    x = 8,009.82

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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.