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Finding the Fourth Proportional to 8,197.84, 11,311.92 and 4,840.80

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Solution

The fourth proportional to 8,197.84, 11,311.92 and 4,840.80 is: 6,679.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,197.84 : 11,311.92 = 4,840.80 : x
  2. Step 2: Convert to fraction form
    8,197.84/11,311.92 = 4,840.80/x
  3. Step 3: Cross multiply
    8,197.84x = 11,311.92 × 4,840.80
  4. Step 4: Simplify right side
    8,197.84x = 54,758,742.34
  5. Step 5: Solve for x
    x = 54,758,742.34/8,197.84
  6. Step 6: Final answer
    x = 6,679.65

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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.