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Finding the Fourth Proportional to 8,877.42, 13,311.81 and 4,719.42

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Solution

The fourth proportional to 8,877.42, 13,311.81 and 4,719.42 is: 7,076.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,877.42 : 13,311.81 = 4,719.42 : x
  2. Step 2: Convert to fraction form
    8,877.42/13,311.81 = 4,719.42/x
  3. Step 3: Cross multiply
    8,877.42x = 13,311.81 × 4,719.42
  4. Step 4: Simplify right side
    8,877.42x = 62,824,022.35
  5. Step 5: Solve for x
    x = 62,824,022.35/8,877.42
  6. Step 6: Final answer
    x = 7,076.83

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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.