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Finding the Fourth Proportional to 9,250.86, 13,890.86 and 7,311.72

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Solution

The fourth proportional to 9,250.86, 13,890.86 and 7,311.72 is: 10,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,250.86 : 13,890.86 = 7,311.72 : x
  2. Step 2: Convert to fraction form
    9,250.86/13,890.86 = 7,311.72/x
  3. Step 3: Cross multiply
    9,250.86x = 13,890.86 × 7,311.72
  4. Step 4: Simplify right side
    9,250.86x = 101,566,078.88
  5. Step 5: Solve for x
    x = 101,566,078.88/9,250.86
  6. Step 6: Final answer
    x = 10,979.10

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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.