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Finding the Fourth Proportional to 4,751.47, 7,128.20 and 1,464.49

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Solution

The fourth proportional to 4,751.47, 7,128.20 and 1,464.49 is: 2,197.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.47 : 7,128.20 = 1,464.49 : x
  2. Step 2: Convert to fraction form
    4,751.47/7,128.20 = 1,464.49/x
  3. Step 3: Cross multiply
    4,751.47x = 7,128.20 × 1,464.49
  4. Step 4: Simplify right side
    4,751.47x = 10,439,177.62
  5. Step 5: Solve for x
    x = 10,439,177.62/4,751.47
  6. Step 6: Final answer
    x = 2,197.04

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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.