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Finding the Fourth Proportional to 9,408.56, 12,984.26 and 5,375.70

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Solution

The fourth proportional to 9,408.56, 12,984.26 and 5,375.70 is: 7,418.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.56 : 12,984.26 = 5,375.70 : x
  2. Step 2: Convert to fraction form
    9,408.56/12,984.26 = 5,375.70/x
  3. Step 3: Cross multiply
    9,408.56x = 12,984.26 × 5,375.70
  4. Step 4: Simplify right side
    9,408.56x = 69,799,459.60
  5. Step 5: Solve for x
    x = 69,799,459.60/9,408.56
  6. Step 6: Final answer
    x = 7,418.72

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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.