Home / 5,408.60-8,112.90-3,216.20

Finding the Fourth Proportional to 5,408.60, 8,112.90 and 3,216.20

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Solution

The fourth proportional to 5,408.60, 8,112.90 and 3,216.20 is: 4,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.60 : 8,112.90 = 3,216.20 : x
  2. Step 2: Convert to fraction form
    5,408.60/8,112.90 = 3,216.20/x
  3. Step 3: Cross multiply
    5,408.60x = 8,112.90 × 3,216.20
  4. Step 4: Simplify right side
    5,408.60x = 26,092,708.98
  5. Step 5: Solve for x
    x = 26,092,708.98/5,408.60
  6. Step 6: Final answer
    x = 4,824.30

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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.