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Finding the Fourth Proportional to 3,645, 5,028.66 and 2,152.62

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Solution

The fourth proportional to 3,645, 5,028.66 and 2,152.62 is: 2,969.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645 : 5,028.66 = 2,152.62 : x
  2. Step 2: Convert to fraction form
    3,645/5,028.66 = 2,152.62/x
  3. Step 3: Cross multiply
    3,645x = 5,028.66 × 2,152.62
  4. Step 4: Simplify right side
    3,645x = 10,824,794.09
  5. Step 5: Solve for x
    x = 10,824,794.09/3,645
  6. Step 6: Final answer
    x = 2,969.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.