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Finding the Fourth Proportional to 3,645.47, 5,469.12 and 1,048.43

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Solution

The fourth proportional to 3,645.47, 5,469.12 and 1,048.43 is: 1,572.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645.47 : 5,469.12 = 1,048.43 : x
  2. Step 2: Convert to fraction form
    3,645.47/5,469.12 = 1,048.43/x
  3. Step 3: Cross multiply
    3,645.47x = 5,469.12 × 1,048.43
  4. Step 4: Simplify right side
    3,645.47x = 5,733,989.48
  5. Step 5: Solve for x
    x = 5,733,989.48/3,645.47
  6. Step 6: Final answer
    x = 1,572.91

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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.