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Finding the Fourth Proportional to 9,936.40, 14,906.40 and 4,993.60

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Solution

The fourth proportional to 9,936.40, 14,906.40 and 4,993.60 is: 7,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,936.40 : 14,906.40 = 4,993.60 : x
  2. Step 2: Convert to fraction form
    9,936.40/14,906.40 = 4,993.60/x
  3. Step 3: Cross multiply
    9,936.40x = 14,906.40 × 4,993.60
  4. Step 4: Simplify right side
    9,936.40x = 74,436,599.04
  5. Step 5: Solve for x
    x = 74,436,599.04/9,936.40
  6. Step 6: Final answer
    x = 7,491.30

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1.5x scale

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.