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Finding the Fourth Proportional to 9,358.37, 12,885.08 and 7,939.12

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Solution

The fourth proportional to 9,358.37, 12,885.08 and 7,939.12 is: 10,930.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,358.37 : 12,885.08 = 7,939.12 : x
  2. Step 2: Convert to fraction form
    9,358.37/12,885.08 = 7,939.12/x
  3. Step 3: Cross multiply
    9,358.37x = 12,885.08 × 7,939.12
  4. Step 4: Simplify right side
    9,358.37x = 102,296,183.96
  5. Step 5: Solve for x
    x = 102,296,183.96/9,358.37
  6. Step 6: Final answer
    x = 10,930.98

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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.