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Finding the Fourth Proportional to 8,915.94, 13,368.92 and 6,107.96

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Solution

The fourth proportional to 8,915.94, 13,368.92 and 6,107.96 is: 9,158.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.94 : 13,368.92 = 6,107.96 : x
  2. Step 2: Convert to fraction form
    8,915.94/13,368.92 = 6,107.96/x
  3. Step 3: Cross multiply
    8,915.94x = 13,368.92 × 6,107.96
  4. Step 4: Simplify right side
    8,915.94x = 81,656,731.22
  5. Step 5: Solve for x
    x = 81,656,731.22/8,915.94
  6. Step 6: Final answer
    x = 9,158.51

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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.