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Finding the Fourth Proportional to 3,636.71, 5,455.97 and 1,171.47

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Solution

The fourth proportional to 3,636.71, 5,455.97 and 1,171.47 is: 1,757.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,636.71 : 5,455.97 = 1,171.47 : x
  2. Step 2: Convert to fraction form
    3,636.71/5,455.97 = 1,171.47/x
  3. Step 3: Cross multiply
    3,636.71x = 5,455.97 × 1,171.47
  4. Step 4: Simplify right side
    3,636.71x = 6,391,505.18
  5. Step 5: Solve for x
    x = 6,391,505.18/3,636.71
  6. Step 6: Final answer
    x = 1,757.50

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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.