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Finding the Fourth Proportional to 6,251.64, 8,609.76 and 6,115.56

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Solution

The fourth proportional to 6,251.64, 8,609.76 and 6,115.56 is: 8,422.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,251.64 : 8,609.76 = 6,115.56 : x
  2. Step 2: Convert to fraction form
    6,251.64/8,609.76 = 6,115.56/x
  3. Step 3: Cross multiply
    6,251.64x = 8,609.76 × 6,115.56
  4. Step 4: Simplify right side
    6,251.64x = 52,653,503.87
  5. Step 5: Solve for x
    x = 52,653,503.87/6,251.64
  6. Step 6: Final answer
    x = 8,422.35

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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.