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Finding the Fourth Proportional to 9,135.30, 13,704.30 and 2,895.90

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Solution

The fourth proportional to 9,135.30, 13,704.30 and 2,895.90 is: 4,344.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.30 : 13,704.30 = 2,895.90 : x
  2. Step 2: Convert to fraction form
    9,135.30/13,704.30 = 2,895.90/x
  3. Step 3: Cross multiply
    9,135.30x = 13,704.30 × 2,895.90
  4. Step 4: Simplify right side
    9,135.30x = 39,686,282.37
  5. Step 5: Solve for x
    x = 39,686,282.37/9,135.30
  6. Step 6: Final answer
    x = 4,344.28

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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.