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Finding the Fourth Proportional to 7,172.64, 10,748.16 and 4,248

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Solution

The fourth proportional to 7,172.64, 10,748.16 and 4,248 is: 6,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.64 : 10,748.16 = 4,248 : x
  2. Step 2: Convert to fraction form
    7,172.64/10,748.16 = 4,248/x
  3. Step 3: Cross multiply
    7,172.64x = 10,748.16 × 4,248
  4. Step 4: Simplify right side
    7,172.64x = 45,658,183.68
  5. Step 5: Solve for x
    x = 45,658,183.68/7,172.64
  6. Step 6: Final answer
    x = 6,365.60

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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.