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Finding the Fourth Proportional to 3,612.80, 5,408.64 and 3,266.93

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Solution

The fourth proportional to 3,612.80, 5,408.64 and 3,266.93 is: 4,890.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.80 : 5,408.64 = 3,266.93 : x
  2. Step 2: Convert to fraction form
    3,612.80/5,408.64 = 3,266.93/x
  3. Step 3: Cross multiply
    3,612.80x = 5,408.64 × 3,266.93
  4. Step 4: Simplify right side
    3,612.80x = 17,669,648.28
  5. Step 5: Solve for x
    x = 17,669,648.28/3,612.80
  6. Step 6: Final answer
    x = 4,890.85

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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.