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Finding the Fourth Proportional to 9,374.36, 12,936.16 and 5,125.64

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Solution

The fourth proportional to 9,374.36, 12,936.16 and 5,125.64 is: 7,073.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,374.36 : 12,936.16 = 5,125.64 : x
  2. Step 2: Convert to fraction form
    9,374.36/12,936.16 = 5,125.64/x
  3. Step 3: Cross multiply
    9,374.36x = 12,936.16 × 5,125.64
  4. Step 4: Simplify right side
    9,374.36x = 66,306,099.14
  5. Step 5: Solve for x
    x = 66,306,099.14/9,374.36
  6. Step 6: Final answer
    x = 7,073.13

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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.