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Finding the Fourth Proportional to 8,713, 13,056.74 and 4,321.69

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Solution

The fourth proportional to 8,713, 13,056.74 and 4,321.69 is: 6,476.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713 : 13,056.74 = 4,321.69 : x
  2. Step 2: Convert to fraction form
    8,713/13,056.74 = 4,321.69/x
  3. Step 3: Cross multiply
    8,713x = 13,056.74 × 4,321.69
  4. Step 4: Simplify right side
    8,713x = 56,427,182.69
  5. Step 5: Solve for x
    x = 56,427,182.69/8,713
  6. Step 6: Final answer
    x = 6,476.21

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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.