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Finding the Fourth Proportional to 6,408.60, 9,591.30 and 5,890.20

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Solution

The fourth proportional to 6,408.60, 9,591.30 and 5,890.20 is: 8,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,408.60 : 9,591.30 = 5,890.20 : x
  2. Step 2: Convert to fraction form
    6,408.60/9,591.30 = 5,890.20/x
  3. Step 3: Cross multiply
    6,408.60x = 9,591.30 × 5,890.20
  4. Step 4: Simplify right side
    6,408.60x = 56,494,675.26
  5. Step 5: Solve for x
    x = 56,494,675.26/6,408.60
  6. Step 6: Final answer
    x = 8,815.45

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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.