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Finding the Fourth Proportional to 9,813, 13,541.94 and 5,397

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Solution

The fourth proportional to 9,813, 13,541.94 and 5,397 is: 7,447.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,813 : 13,541.94 = 5,397 : x
  2. Step 2: Convert to fraction form
    9,813/13,541.94 = 5,397/x
  3. Step 3: Cross multiply
    9,813x = 13,541.94 × 5,397
  4. Step 4: Simplify right side
    9,813x = 73,085,850.18
  5. Step 5: Solve for x
    x = 73,085,850.18/9,813
  6. Step 6: Final answer
    x = 7,447.86

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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.