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Finding the Fourth Proportional to 5,548.85, 7,644.39 and 3,867.20

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Solution

The fourth proportional to 5,548.85, 7,644.39 and 3,867.20 is: 5,327.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,548.85 : 7,644.39 = 3,867.20 : x
  2. Step 2: Convert to fraction form
    5,548.85/7,644.39 = 3,867.20/x
  3. Step 3: Cross multiply
    5,548.85x = 7,644.39 × 3,867.20
  4. Step 4: Simplify right side
    5,548.85x = 29,562,385.01
  5. Step 5: Solve for x
    x = 29,562,385.01/5,548.85
  6. Step 6: Final answer
    x = 5,327.66

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1.5x scale

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.