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Finding the Fourth Proportional to 6,239.64, 8,606.88 and 4,251.09

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Solution

The fourth proportional to 6,239.64, 8,606.88 and 4,251.09 is: 5,863.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,239.64 : 8,606.88 = 4,251.09 : x
  2. Step 2: Convert to fraction form
    6,239.64/8,606.88 = 4,251.09/x
  3. Step 3: Cross multiply
    6,239.64x = 8,606.88 × 4,251.09
  4. Step 4: Simplify right side
    6,239.64x = 36,588,621.50
  5. Step 5: Solve for x
    x = 36,588,621.50/6,239.64
  6. Step 6: Final answer
    x = 5,863.90

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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.