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Finding the Fourth Proportional to 5,393.20, 8,073.60 and 4,745.20

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Solution

The fourth proportional to 5,393.20, 8,073.60 and 4,745.20 is: 7,103.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.20 : 8,073.60 = 4,745.20 : x
  2. Step 2: Convert to fraction form
    5,393.20/8,073.60 = 4,745.20/x
  3. Step 3: Cross multiply
    5,393.20x = 8,073.60 × 4,745.20
  4. Step 4: Simplify right side
    5,393.20x = 38,310,846.72
  5. Step 5: Solve for x
    x = 38,310,846.72/5,393.20
  6. Step 6: Final answer
    x = 7,103.55

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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.