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Finding the Fourth Proportional to 8,967.81, 13,453.88 and 2,811.81

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Solution

The fourth proportional to 8,967.81, 13,453.88 and 2,811.81 is: 4,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,967.81 : 13,453.88 = 2,811.81 : x
  2. Step 2: Convert to fraction form
    8,967.81/13,453.88 = 2,811.81/x
  3. Step 3: Cross multiply
    8,967.81x = 13,453.88 × 2,811.81
  4. Step 4: Simplify right side
    8,967.81x = 37,829,787.96
  5. Step 5: Solve for x
    x = 37,829,787.96/8,967.81
  6. Step 6: Final answer
    x = 4,218.40

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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.