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Finding the Fourth Proportional to 9,638.64, 14,453.04 and 4,440

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Solution

The fourth proportional to 9,638.64, 14,453.04 and 4,440 is: 6,657.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,638.64 : 14,453.04 = 4,440 : x
  2. Step 2: Convert to fraction form
    9,638.64/14,453.04 = 4,440/x
  3. Step 3: Cross multiply
    9,638.64x = 14,453.04 × 4,440
  4. Step 4: Simplify right side
    9,638.64x = 64,171,497.60
  5. Step 5: Solve for x
    x = 64,171,497.60/9,638.64
  6. Step 6: Final answer
    x = 6,657.73

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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.