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Finding the Fourth Proportional to 8,245.64, 11,379.04 and 4,890.12

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Solution

The fourth proportional to 8,245.64, 11,379.04 and 4,890.12 is: 6,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,245.64 : 11,379.04 = 4,890.12 : x
  2. Step 2: Convert to fraction form
    8,245.64/11,379.04 = 4,890.12/x
  3. Step 3: Cross multiply
    8,245.64x = 11,379.04 × 4,890.12
  4. Step 4: Simplify right side
    8,245.64x = 55,644,871.08
  5. Step 5: Solve for x
    x = 55,644,871.08/8,245.64
  6. Step 6: Final answer
    x = 6,748.40

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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.