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Finding the Fourth Proportional to 3,605.76, 5,408.49 and 1,008.63

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Solution

The fourth proportional to 3,605.76, 5,408.49 and 1,008.63 is: 1,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.76 : 5,408.49 = 1,008.63 : x
  2. Step 2: Convert to fraction form
    3,605.76/5,408.49 = 1,008.63/x
  3. Step 3: Cross multiply
    3,605.76x = 5,408.49 × 1,008.63
  4. Step 4: Simplify right side
    3,605.76x = 5,455,165.27
  5. Step 5: Solve for x
    x = 5,455,165.27/3,605.76
  6. Step 6: Final answer
    x = 1,512.90

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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.